> For the complete documentation index, see [llms.txt](/llms.txt).

# eth_signTypedData_v4

Signs structured data according to EIP-712, which provides a more secure way to sign data by providing context and structure to the data being signed.

### Parameters

`address`(string)required

The address that should sign the data (20 bytes).

`typedData`(object)required

The typed structured data to be signed.

typedData properties▼

### Returns

The signature as a hexadecimal string.

### Errors

| Code   | Description                               |
| ------ | ----------------------------------------- |
| 4001   | User denied the signing request           |
| 4100   | The method is not supported by the wallet |
| -32602 | Invalid typed data structure              |

Example request

```
await provider.request({
  method: 'eth_signTypedData_v4',
  params: [
    '0x3b7252d007059ffc82d16d022da3cbf9992d2f70',
    {
      types: {
        EIP712Domain: [
          { name: 'name', type: 'string' },
          { name: 'version', type: 'string' },
          { name: 'chainId', type: 'uint256' },
          { name: 'verifyingContract', type: 'address' },
        ],
        Person: [
          { name: 'name', type: 'string' },
          { name: 'wallet', type: 'address' },
        ],
      },
      primaryType: 'Person',
      domain: {
        name: 'Example App',
        version: '1',
        chainId: 1,
        verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
      },
      message: {
        name: 'Alice',
        wallet: '0x3b7252d007059ffc82d16d022da3cbf9992d2f70',
      },
    },
  ],
})

```

Example response

```
{
  "id": 1,
  "jsonrpc": "2.0",
  "result": "0x4355c47d63924e8a72e509b65029052eb6c299d53a04e167c5775fd466751c9d07299936d304c153f6443dfa05f40ff007d72911b6f72307f996231605b915621c"
}

```