EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_mint","data":[{"owner_id":"de0a4c3599e31b5d88fb8d3c4b7c3b6020fb93634795908b5af23daea8541d05","token_ids":["497447:68"],"memo":"{\"price\":\"0\"}"}]}