EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_transfer","data":[{"old_owner_id":"a99448ef6d5804ddfde7121eddd815f9d32b4128e97eceb8c41132995baa2010","new_owner_id":"83f7c2269855778ad35122ab3b18d4d0ccfbf9f46e7483f1a1cd54433db29756","token_ids":["1231"]}]}