EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_transfer","data":[{"old_owner_id":"33d425de78990acf0c387977f8257f2f20ad8d1f38ec0767080d90112cd67a5f","new_owner_id":"2bccca7db233316149669709af844156875e0989c2a11bad03572749fdd6ad28","token_ids":["21"]}]}