# SignSignature (ById)

Executes a confirmed signature request by performing the cryptographic signing operation. It returns the completed signature in the appropriate format.

**Prerequisites:**

* Signature request must be in **READY** status (use confirm endpoint first)

{% code overflow="wrap" %}

```cpp
void SignSignatureById_SubmittedAndSignedTransactionSignature(FString Id, const FVyUserAuth& SigningMethod, const FVySignSignatureById_SubmittedAndSignedTransactionSignatureRequest& Params, const FVyOnSignSignatureById_SubmittedAndSignedTransactionSignatureComplete& OnComplete) const;
```

{% endcode %}

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**Parameters**

| Id            | FString                                                                                                                                                                                                          | UUID of the signature request to execute                                                            |
| ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- |
| SigningMethod | FVyUserAuth                                                                                                                                                                                                      | The Id and Value of one of the user's registered signing-methods                                    |
| Params        | [FVySignSignatureById\_SubmittedAndSignedTransactionSignatureRequest](https://sdk.venly.io/sdk-reference/ue5-sdk-v3/object-references/wallet/fvysignsignaturebyid_submittedandsignedtransactionsignaturerequest) | Parameters for this operation (FVySignSignatureById\_SubmittedAndSignedTransactionSignatureRequest) |
| OnComplete    | FVyOnSignSignatureById\_SubmittedAndSignedTransactionSignatureComplete                                                                                                                                           | The callback function called when the user preferences retrieval operation is complete.             |

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**OnComplete Callback** (FVyOnSignSignatureById\_SubmittedAndSignedTransactionSignatureComplete)\
Contains a [FVySubmittedAndSignedTransactionSignatureDto](https://sdk.venly.io/sdk-reference/ue5-sdk-v3/object-references/wallet/fvysubmittedandsignedtransactionsignaturedto) response type