ALTER TABLE jam_track_rights ADD COLUMN private_key_44 VARCHAR;
ALTER TABLE jam_track_rights ADD COLUMN private_key_48 VARCHAR;
ALTER TABLE jam_track_rights ADD COLUMN signed_48 BOOLEAN NOT NULL DEFAULT FALSE;
ALTER TABLE jam_track_rights ADD COLUMN signed_44 BOOLEAN NOT NULL DEFAULT FALSE;
ALTER TABLE jam_track_rights DROP COLUMN private_key;
ALTER TABLE jam_track_rights DROP COLUMN signed;
ALTER TABLE jam_track_rights ADD COLUMN signing_started_at_44 TIMESTAMP;
ALTER TABLE jam_track_rights ADD COLUMN signing_started_at_48 TIMESTAMP;
ALTER TABLE jam_track_rights DROP COLUMN signing_started_at;