Drake has filed a petition accusing Universal Music Group (UMG) of artificially inflating the popularity of Kendrick Lamar's diss track 'Not Like Us'.The petition alleges that UMG used 'bots' to manipulate the spread of the track and charged Spotify lower rates in exchange for promoting the song.UMG has denied the allegations and called them offensive and untrue.The petition requests pre-action disclosure of information and preservation of evidence for a potential lawsuit.