have a question about querying a type that exists to join two types. so i have User and Song types and then RecentSong which is basically a list of songs the user has recently played. The thing is when the same song is played again I don't want to create a new recent song, i just want to update the time last played. Is it possible to do a single graphql mutation that would get a user's recent songs and "upsert" the time last played if the recent song already exists or it would create a new recent song if it doesn't exist?? Does this schema approach even make sense?