EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_mint","data":[{"owner_id":"ab1d1851e635adf3ae27db3b3d7f9f3649d5c9d81d9889fb9f2dc2fb5f3ae5ba","token_ids":["470349:3"],"memo":"{\"price\":\"0\"}"}]}