> For the complete documentation index, see [llms.txt](https://docs.altura.com/altura-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.altura.com/altura-documentation/api-reference/altura-guard-ii/transaction-requests/submitting-a-signature-request.md).

# Submitting a signature request

{% hint style="info" %}
You need to encode the message in hex before requesting a signature.
{% endhint %}

```javascript
const message = utf8ToHex("Altura Guard II Sign Message Demo", true);
```

<mark style="color:green;">`POST`</mark> `https://api.alturanft.com/api/alturaguard/request`

#### Request Body

| Name                                            | Type   | Description                             |
| ----------------------------------------------- | ------ | --------------------------------------- |
| token<mark style="color:red;">\*</mark>         | String | User token recieved when authenticating |
| reqParameters<mark style="color:red;">\*</mark> | array  | `["signature", message]`                |

{% tabs %}
{% tab title="200: OK requestId" %}

```javascript
requestId
```

{% endtab %}

{% tab title="400: Bad Request Invalid reqParameters" %}

{% endtab %}

{% tab title="401: Unauthorized Invalid token" %}

{% endtab %}
{% endtabs %}