rowid,room_id,user_id,event_id,membership,event_stream_ordering
481,!IDVzmHGTigaDkLInhb:matrix.jamesst.one,@slack_t0qh48pl4-u072zlzmnmc:matrix.jamesst.one,$gn763Fpb79p6FUmHMUDpQG5h5wYdXvok-rPuga4cFyY,join,1632