rowid,room_id,user_id,event_id,membership,event_stream_ordering
621,!HPNcDxTDpUhwcvGFdW:matrix.jamesst.one,@slack_t0qh48pl4-u3p7e6ucb:matrix.jamesst.one,$R_7B3pIgGc5Ur6jrQv8ltcMNpPtXtPjOFDch0DDrtWM,join,1775