# prepareTypedDataForSigning

The `prepareTypedDataForSigning` method prepares EIP-712 typed data for MPC signing.

## Usage

```ts twoslash
// [!include ~/snippets/code/chains.ts]
// ---cut---

const typedData: chainAdapters.evm.EVMTypedData = {
  domain: {
    name: 'My dApp',
    version: '1',
    chainId: 1,
    verifyingContract: '0x1234567890123456789012345678901234567890',
  },
  types: {
    Person: [
      { name: 'name', type: 'string' },
      { name: 'wallet', type: 'address' },
    ],
  },
  primaryType: 'Person',
  message: {
    name: 'Alice',
    wallet: '0x1234567890123456789012345678901234567890',
  },
}

const { hashToSign } = await evmChain.prepareTypedDataForSigning(typedData)
```

## Parameters

| Parameter          | Type           | Description                                |
| ------------------ | -------------- | ------------------------------------------ |
| `typedDataRequest` | `EVMTypedData` | The EIP-712 typed data object to be signed |

## Returns

| Property     | Type         | Description                              |
| ------------ | ------------ | ---------------------------------------- |
| `hashToSign` | `HashToSign` | The hash to be signed by the MPC network |