Nasubi

In 1998, there was a Japanese reality show that was about a comedian named Eggplant (Nasubi) who was stripped naked, locked in a room, and forced to live off prizes he won in the mail. He didn't know that his experience was being live streamed 24x7. He had to win $10,000 worth of prizes from magazine contests to win the show. After spending 335 days to reach his target, he set the Guinness world record for the "longest time survived on competition winnings." It was a gigantic hit show in Japan.