```\\nfunction toEthSignedMessageHash(\\n    bytes32 hash\\n) internal pure returns (bytes32 message) {\\n    // 32 is the length in bytes of hash,\\n    // enforced by the type signature above\\n    /// @solidity memory-safe-assembly\\n    assembly {\\n        mstore(0x00, "\\x19Ethereum Signed Message:\\n32")\\n        mstore(0x1c, hash)\\n        message := keccak256(0x00, 0x3c)\\n    }\\n}\\n```\\n