EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_transfer","data":[{"old_owner_id":"55729feda36a98b4fbd5232d254b40132a98e5df1642ade7a871cdd37703646d","new_owner_id":"fa5ebff3a2b18f643870b600e5e4e090ffeb8335e713727a228661f7b083ce38","token_ids":["123"]}]}