Memo: EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_transfer","data":[{"old_owner_id":"17etro.near","new_owner_id":"025bda5b783fe01028d5868e7880bc954b264b27cb4f4ddbd7f7a33ea72bda46","token_ids":["50"],"memo":""}]}