[{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"bytes32","name":"_hash","type":"bytes32"},{"internalType":"bytes","name":"_signature","type":"bytes"}],"name":"isValidSignature","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"view","type":"function"}]