Former U.S. President Donald Trump hands back an autographed copy of Trump: The Art of the Deal, a book he authored, for a supporter after his speech during a rally at the Iowa States Fairgrounds in Des Moines, Iowa, U.S., October 9, 2021. REUTERS/Rachel Mummey

Former French President Nicolas Sarkozy signs an autograph during a meeting with the readers of his latest book "Promenades" at a bookstore in Paris, France, October 2, 2021. REUTERS/Stephane Mahe

Spanish singer Alejandro Sanz signs autographs during the unveiling ceremony of his star on the Hollywood Walk of Fame in Los Angeles, California, U.S., October 1, 2021. REUTERS/Mario Anzuoni

Spanish singer Alejandro Sanz signs autographs during the unveiling ceremony of his star on the Hollywood Walk of Fame in Los Angeles, California, U.S., October 1, 2021. REUTERS/Mario Anzuoni

A supporter reacts as former college football star and current senatorial candidate Herschel Walker signs autographs at a rally in Perry, Georgia, U.S. September 25, 2021. REUTERS/Dustin Chambers

Germany's leader of Free Democratic Party (FDP) and top candidate for Chancellor Christian Lindner autographs a picture of his for a supporter during election campaigning in Cologne, Germany, September 25, 2021. REUTERS/Thilo Schmuelgen

Germany's SPD candidate for the general election, Olaf Scholz, autographs a placard as he campaigns in Cologne, Germany, September 24, 2021. REUTERS/Wolfgang Rattay

Canada's opposition Conservative Party leader Erin O'Toole autographs a campaign sign for young supporters during his election campaign tour in Kitchener, Ontario, Canada September 18, 2021. REUTERS/Blair Gable

TIFF Tribute Actor Award recipient Jessica Chastain signs autographs for fans after a news conference for the 2021 TIFF Tribute Awards during the Toronto International Film Festival in Toronto, Ontario, Canada September 11, 2021. REUTERS/Mark Blinch

Leader of the Conservative Party of Canada, Erin O'Toole, gives an autograph to a supporter at a campaign stop in Hamilton, Ontario, Canada on August 25, 2021. REUTERS/Carlos Osorio

Cast member Ashley Greene signs autographs at a premiere for the film "Aftermath" in Los Angeles, California, U.S., August 3, 2021. REUTERS/Mario Anzuoni

Cast member Ashley Greene signs autographs at a premiere for the film "Aftermath" in Los Angeles, California, U.S., August 3, 2021. REUTERS/Mario Anzuoni

Actor Camille Kostek gives autographs at the premiere for the film "Free Guy" in New York City, New York, U.S., August 3, 2021. REUTERS/Caitlin Ochs

Teddy Riner, who scored the Olympic bronze medal in the men's +100kg category, signs autographs after his arrival at the Charles-de-Gaulle airport in Roissy, near Paris, France, August 2, 2021. REUTERS/Sarah Meyssonnier

International Olympic Committee (IOC) President Thomas Bach signs his autograph as he visits the Olympic Agora exhibition in Tokyo, Japan, July 30, 2021. REUTERS/Issei Kato/Pool

The 74th Cannes Film Festival - News conference for the film "Nitram" in competition - Cannes, France, July 17, 2021. Cast member Caleb Landry Jones gives autographs. REUTERS/Johanna Geron

The 74th Cannes Film Festival - News conference for the film "Nitram" in competition - Cannes, France, July 17, 2021. Cast member Caleb Landry Jones gives autographs. REUTERS/Johanna Geron

Soccer Football - Juventus Training - Juventus Training Center, Turin, Italy - July 14, 2021 Juventus' Paulo Dybala signs his autograph for fans REUTERS/Massimo Pinca

Soccer Football - Juventus Training - Juventus Training Center, Turin, Italy - July 14, 2021 Juventus' Paulo Dybala signs his autograph for fans REUTERS/Massimo Pinca

The 74th Cannes Film Festival - News conference for the film "Titane" in competition - Cannes, France, July 14, 2021. Cast member Agathe Rousselle gives autographs. REUTERS/Johanna Geron

Soccer Football - Juventus Training - Juventus Training Center, Turin, Italy - July 14, 2021 Juventus' Mattia Perin signs an autograph for a fan REUTERS/Massimo Pinca

Soccer Football - Euro 2020 - Italy's President Sergio Mattarella meets with the Italy team after they won Euro 2020 - Parco dei Principi hotel, Rome, Italy - July 12, 2021 Italy's Giorgio Chiellini signs his autograph for fans outside their hotel before they meet Italy's President Sergio Mattarella REUTERS/Yara Nardi

Tennis - Wimbledon - All England Lawn Tennis and Croquet Club, London, Britain - July 11, 2021 Serbia's Novak Djokovic signs an autograph for a fan after winning his final match against Italy's Matteo Berrettini Pool via REUTERS/Peter Nicholls

Tennis - Wimbledon - All England Lawn Tennis and Croquet Club, London, Britain - July 11, 2021 Serbia's Novak Djokovic signs an autograph for a fan after winning his final match against Italy's Matteo Berrettini Pool via REUTERS/Peter Nicholls

Tennis - Wimbledon - All England Lawn Tennis and Croquet Club, London, Britain - July 11, 2021 Serbia's Novak Djokovic signs an autograph for a fan after winning his final match against Italy's Matteo Berrettini REUTERS/Toby Melville

Tennis - Wimbledon - All England Lawn Tennis and Croquet Club, London, Britain - July 11, 2021 Serbia's Novak Djokovic signs an autograph for a fan after winning his final match against Italy's Matteo Berrettini REUTERS/Paul Childs

The 74th Cannes Film Festival - News conference for the film "Stillwater" Out of Competition - Cannes, France, July 9, 2021. Cast member Matt Damon signs autographs. REUTERS/Eric Gaillard TPX IMAGES OF THE DAY

The 74th Cannes Film Festival - News conference for the film "Stillwater" Out of Competition - Cannes, France, July 9, 2021. Cast member Matt Damon signs autographs. REUTERS/Eric Gaillard

The 74th Cannes Film Festival - News conference for the film "Stillwater" Out of Competition - Cannes, France, July 9, 2021. Cast member Matt Damon signs autographs. REUTERS/Eric Gaillard

Formula One F1 - Austrian Grand Prix - Red Bull Ring, Spielberg, Styria, Austria - July 1, 2021 Red Bull's Max Verstappen signs an autograph as he arrives at the circuit REUTERS/Leonhard Foeger

Horse Racing - Royal Ascot - Ascot Racecourse, Ascot, Britain - June 15, 2021 Rachael Blackmore signs a autograph for a fan Action Images via Reuters/Peter Cziborra

Soccer Football - Tigres presentation for new signing Florian Thauvin - Estadio Universitario, Monterrey, Mexico - July 11, 2021 Tigres' new signing Florian Thauvin autographs a T-shirt with his image on it REUTERS/Daniel Becerril

Soccer Football - International Friendly - Poland v Russia - Stadion Miejski, Wroclaw, Poland - June 1, 2021 Poland's Robert Lewandowski signs autographs for fans REUTERS/Kacper Pempel

Kendall Capps, sports director at Julien's Auctions, holds a pair of soccer boots worn and autographed by late soccer star Diego Armando Maradona ahead of the upcoming "Sports: Legends" auction in Culver City, California, U.S., May 3, 2021. Picture taken May 3, 2021. REUTERS/Mario Anzuoni

Kendall Capps, sports director at Julien's Auctions, covers a soccer ball autographed by late soccer star Diego Armando Maradona ahead of the upcoming "Sports: Legends" auction in Culver City, California, U.S., May 3, 2021. Picture taken May 3, 2021. REUTERS/Mario Anzuoni

Kendall Capps, sports director at Julien's Auctions, holds a soccer ball autographed by late soccer star Diego Armando Maradona ahead of the upcoming "Sports: Legends" auction in Culver City, California, U.S., May 3, 2021. Picture taken May 3, 2021. REUTERS/Mario Anzuoni

Kendall Capps, sports director at Julien's Auctions, holds a soccer ball autographed by late soccer star Diego Armando Maradona ahead of the upcoming "Sports: Legends" auction in Culver City, California, U.S., May 3, 2021. Picture taken May 3, 2021. REUTERS/Mario Anzuoni

Kendall Capps, sports director at Julien's Auctions, holds a soccer ball autographed by late soccer star Diego Armando Maradona ahead of the upcoming "Sports: Legends" auction in Culver City, California, U.S., May 3, 2021. Picture taken May 3, 2021. REUTERS/Mario Anzuoni

Dr. Kim Lewis, Associate Dean for Research, Graduate Programs and Natural Sciences at Howard University autographs an American Jobs Plan sign after participating in a roundtable discussion with U.S. Secretary of Energy Jennifer Granholm on need for greater diversity in science, technology, engineering, and math (STEM) at Howard University in Washington, U.S., May 3, 2021. Stefani Reynolds/Pool via REUTERS

Surfer Gabriel Medina of Brazil signs autographs for fans after competing during the Rip Curl Narrabeen Classic competition in the Narrabeen suburb of northern Sydney, Australia, April 19, 2021. Picture taken April 19, 2021. REUTERS/Loren Elliott

Surfer Sally Fitzgibbons of Australia signs autographs for young fans after competing during the Rip Curl Narrabeen Classic competition in the Narrabeen suburb of northern Sydney, Australia, April 19, 2021. Picture taken April 19, 2021. REUTERS/Loren Elliott

Surfer Sally Fitzgibbons of Australia signs autographs for young fans after competing during the Rip Curl Narrabeen Classic competition in the Narrabeen suburb of northern Sydney, Australia, April 19, 2021. Picture taken April 19, 2021. REUTERS/Loren Elliott

Actor Lin-Manuel Miranda and New York Mayor Bill de Blasio, sign the autograph wall after they toured the grand opening of a Broadway COVID-19 vaccination site intended to jump-start the city's entertainment industry, in New York City, U.S, April 12, 2021. Richard Drew/Pool via REUTERS

Lucas Bernstein gets an autograph from Bubba Watson after winning the boys 7-9 year-old category at the Drive, Chip and Putt National Finals at Augusta National Golf Club in Augusta, Georgia, U.S., April 4, 2021. REUTERS/Mike Segar

Soccer Football - World Cup Qualifiers Europe - Group E - Belarus v Estonia - Dynamo Stadium, Minsk, Belarus - March 27, 2021 Belarus' Syarhey Kislyak signs autographs for fans after the match REUTERS/Dzianis Kastsiuchenka

Soccer Football - World Cup Qualifiers Europe - Group E - Belarus v Estonia - Dynamo Stadium, Minsk, Belarus - March 27, 2021 Belarus' Syarhey Kislyak signs autographs for fans after the match REUTERS/Dzianis Kastsiuchenka

Tennis - ATP 500 - Mexican Open - The Fairmont Acapulco Princess, Acapulco, Mexico - March 16, 2021 Canada's Milos Raonic signs autographs for fans after winning his first round match against Tommy Paul of the U.S. REUTERS/Carlos Perez-Gallardo

Basketball - Pau Gasol arrives at Josep Tarradellas Barcelona-El Prat Airport - Josep Tarradellas Barcelona-El Prat Airport, Barcelona, Spain - March 3, 2021 Pau Gasol signs autographs for fans as he arrives in Barcelona REUTERS/Albert Gea

U.S. Rep. Jim Jordan of Ohio signs an autograph for an attendee at the Conservative Political Action Conference (CPAC) in Orlando, Florida, U.S. February 28, 2021. REUTERS/Octavio Jones

Tennis - Australian Open - Men's Singles Photo Shoot - Brighton Beach, Melbourne, Australia, February 22, 2021 Australian Open champion Serbia's Novak Djokovic signs his autograph on a pregnant woman's belly during a photo shoot at Brighton Beach REUTERS/Loren Elliott

Tennis - Australian Open - Men's Singles Photo Shoot - Brighton Beach, Melbourne, Australia, February 22, 2021 Australian Open champion Serbia's Novak Djokovic signs his autograph on a pregnant woman's belly during a photo shoot at Brighton Beach REUTERS/Loren Elliott

Tennis - Australian Open - Men's Singles Photo Shoot - Brighton Beach, Melbourne, Australia, February 22, 2021 The Australian Open champion Serbia's Novak Djokovic autograph is seen on a pregnant woman's belly during a photo shoot at Brighton Beach REUTERS/Loren Elliott

Tennis - Australian Open - Men's Singles Photo Shoot - Brighton Beach, Melbourne, Australia, February 22, 2021 Australian Open champion Serbia's Novak Djokovic signs his autograph on a pregnant woman's belly during a photo shoot at Brighton Beach REUTERS/Loren Elliott TPX IMAGES OF THE DAY

Tennis - Australian Open - Men's Singles Final - Melbourne Park, Melbourne, Australia, February 21, 2021 Serbia's Novak Djokovic signs autographs after winning his final match against Russia's Daniil Medvedev REUTERS/Asanka Brendon Ratnayake

Tennis - Australian Open - Men's Singles Final - Melbourne Park, Melbourne, Australia, February 21, 2021 Serbia's Novak Djokovic signs autographs after winning his final match against Russia's Daniil Medvedev REUTERS/Asanka Brendon Ratnayake

Tennis - Australian Open - Men's Singles Final - Melbourne Park, Melbourne, Australia, February 21, 2021 Serbia's Novak Djokovic signs autographs after winning his final match against Russia's Daniil Medvedev REUTERS/Kelly Defina

Tennis - Australian Open - Men's Singles Final - Melbourne Park, Melbourne, Australia, February 21, 2021 Serbia's Novak Djokovic signs autographs after winning his final match against Russia's Daniil Medvedev REUTERS/Kelly Defina

Tennis - Australian Open - Women's Singles Final - Melbourne Park, Melbourne, Australia, February 20, 2021 Japan's Naomi Osaka signs autographs for fans after winning her final match against Jennifer Brady of the U.S. REUTERS/Asanka Brendon Ratnayake

Tennis - Australian Open - Women's Singles Final - Melbourne Park, Melbourne, Australia, February 20, 2021 Japan's Naomi Osaka signs autographs for fans after winning her final match against Jennifer Brady of the U.S. REUTERS/Asanka Brendon Ratnayake

Tennis - Australian Open - Melbourne Park, Melbourne, Australia, February 19, 2021 Russia's Daniil Medvedev signs autographs for fans after winning his semi final match against Greece's Stefanos Tsitsipas REUTERS/Jaimi Joy