[{"constant":true,"inputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"uint256","name":"expires","type":"uint256"},{"internalType":"uint256","name":"duration","type":"uint256"}],"name":"price","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"}]