{
    "Function": "isValidSignature",
    "File": "contracts/lib/safe-contracts/contracts/handler/CompatibilityFallbackHandler.sol",
    "Parent Contracts": [
        "contracts/lib/safe-contracts/contracts/interfaces/ISignatureValidator.sol",
        "contracts/lib/safe-contracts/contracts/interfaces/ISignatureValidator.sol",
        "contracts/lib/safe-contracts/contracts/handler/DefaultCallbackHandler.sol",
        "contracts/lib/safe-contracts/contracts/interfaces/IERC165.sol",
        "contracts/lib/safe-contracts/contracts/interfaces/ERC721TokenReceiver.sol",
        "contracts/lib/safe-contracts/contracts/interfaces/ERC777TokensRecipient.sol",
        "contracts/lib/safe-contracts/contracts/interfaces/ERC1155TokenReceiver.sol"
    ],
    "High-Level Calls": [
        "ISignatureValidator"
    ],
    "Internal Calls": [
        "abi.encode()"
    ],
    "Library Calls": [],
    "Low-Level Calls": [],
    "Code": "function isValidSignature(bytes32 _dataHash, bytes calldata _signature) external view returns (bytes4) {\n        ISignatureValidator validator = ISignatureValidator(msg.sender);\n        bytes4 value = validator.isValidSignature(abi.encode(_dataHash), _signature);\n        return (value == EIP1271_MAGIC_VALUE) ? UPDATED_MAGIC_VALUE : bytes4(0);\n    }"
}