EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_transfer","data":[{"old_owner_id":"6ef166904f8f0eeac8dc3067896b7fe9460686a59b1c96094e90073e15038809","new_owner_id":"0e7eaaf9fe5a9c12adc8803b6ddce06397943265c5536336bff3a1d3f9d056a9","token_ids":["867"]}]}