rowid,room_id,user_id,event_id,membership,event_stream_ordering
863,!LZlkjmrdSOMzgPpPqy:matrix.jamesst.one,@slack_t0qh48pl4-u0qp3lk0f:matrix.jamesst.one,$_kK7Fw2UyQhOW_tW5MX1EJ-lUHQEhPJgwAhyqI-O6a8,join,2017