EVENT_JSON:{"standard":"Nep245Event","version":"1.0.0","event":"mt_transfer","data":[{"old_owner_id":"nearcon-demo.testnet","new_owner_id":"a294646613a1c97df012547fe1e5e827d73b383ace6d709995fd21507acad6d4","token_ids":["1","2","3"],"amounts":["19","13","4"]}]}