Insider spoke to multiple people who claim Thiel became a “confidential human source” for a Los Angeles-based agent named Johnathan Buma — a term that indicates a long-running relationship with the FBI, allegedly beginning in 2021. While Thiel was once a high-profile supporter of former President Donald Trump, a subject of multiple FBI investigations, the deal is said to have excluded any information about Thiel’s domestic political contacts. Insider says it focused instead on…