> For the complete documentation index, see [llms.txt](https://sdk.venly.io/sdk-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk.venly.io/sdk-reference/ue5-sdk-v3/function-references/wallet/signatures/buildsignaturerequest/buildsignaturerequest_1.md).

# BuildSignatureRequest\_Message

Transforms a generic signature request into a blockchain-specific signature request with all necessary parameters populated for the target network.

**Supported operations:**

* **Plain Message signing**
* **EIP-712 structured data signing**

{% code overflow="wrap" %}

```cpp
void BuildSignatureRequest_Message(const FVyBuildSignatureRequest_MessageRequest& Params, const FVyOnBuildSignatureRequest_MessageComplete& OnComplete) const;
```

{% endcode %}

\
**Parameters**

| Params     | [FVyBuildSignatureRequest\_MessageRequest](/sdk-reference/ue5-sdk-v3/object-references/wallet/fvybuildsignaturerequest_messagerequest.md) | Parameters for this operation (FVyBuildSignatureRequest\_MessageRequest)                |
| ---------- | ----------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- |
| OnComplete | FVyOnBuildSignatureRequest\_MessageComplete                                                                                               | The callback function called when the user preferences retrieval operation is complete. |

\
**OnComplete Callback** (FVyOnBuildSignatureRequest\_MessageComplete)\
Contains a [FVyBuildSignatureResultDto](/sdk-reference/ue5-sdk-v3/object-references/wallet/fvybuildsignatureresultdto.md) response type