EVENT_JSON:{"standard":"nep171","version":"1.0.0","event":"nft_mint","data":[{"owner_id":"c814e90a6ccbffae46a9f356af135a6fb8d8fc892054e0de74e0a3f977efb9de","token_ids":["495362:9935"],"memo":"{\"price\":\"0\"}"}]}