[{"constant":false,"inputs":[{"name":"hash","type":"bytes32"},{"name":"signerAddress","type":"address"},{"name":"signature","type":"bytes"}],"name":"preSign","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"validatorAddress","type":"address"},{"name":"approval","type":"bool"}],"name":"setSignatureValidatorApproval","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"hash","type":"bytes32"},{"name":"signerAddress","type":"address"},{"name":"signature","type":"bytes"}],"name":"isValidSignature","outputs":[{"name":"isValid","type":"bool"}],"payable":false,"stateMutability":"view","type":"function"},{"anonymous":false,"inputs":[{"indexed":true,"name":"signerAddress","type":"address"},{"indexed":true,"name":"validatorAddress","type":"address"},{"indexed":false,"name":"approved","type":"bool"}],"name":"SignatureValidatorApproval","type":"event"}]