According to the police report, a man by the name Justin Jackson sent an email to a rep at Interscope Records, Kendrick Lamar's label ... and claimed he was Adele's manager. He was trying to score 3 tickets to the Rolling Loud music festival in Miami, where Kendrick was headlining.

According to docs, Kendrick's rep thought it was shady and hit up Jonathan Dickens, Adele's real rep, and discovered it was a hoax. Dickens' lawyers notified police who arrested Jackson and his wife ... when they showed up at the venue to collect the passes.

Adele's attorney, Brian Bieber (no relation), tells us the suspect also pulled similar moves attempting to get tickets from Chris Brown, Kate Perry and Rihanna -- and even sneakers from NBA star Carmelo Anthony.

The Miami Herald, which broke the story, says Justin's got a rap sheet for this sort of thing. He was once convicted of posing as Madonna’s manager to steal $2.4 million in jewelry.