# Customer Registration

After the first activation of a user using the SDK, Gigastore sends the webhook as a POST request, providing the customers with the UID needed for later top-ups. On your server, you must implement a callback sending the user's email.

{% hint style="info" %}
Please add your server URL on [Gigastore](https://dent.giga.store/#/api). \
Only **HTTPS** server URLs are allowed. 
{% endhint %}

### Request Parameters <a href="#response-parameters" id="response-parameters"></a>

| Attribute  | Type   | Example                              | Info                                                                                             |
| ---------- | ------ | ------------------------------------ | ------------------------------------------------------------------------------------------------ |
| user token | string | USER\_TOKEN\_1234567                 | The userToken you provided in [setUserToken](https://docs.giga.store/ios/load-sdk#set-usertoken) |
| uid        | string | 058c8716-47dd-4fc4-be89-00978a86b7c0 | The ID of your user on Gigastore                                                                 |

#### Sample Request <a href="#sample-response" id="sample-response"></a>

```
{
    "userToken": "USER_TOKEN_1234567",
    "customerUid": "058c8716-47dd-4fc4-be89-00978a86b7c0"
}
```

### Response Parameters <a href="#response-parameters" id="response-parameters"></a>

| Attribute | Type   | Example            | Info                                                               |
| --------- | ------ | ------------------ | ------------------------------------------------------------------ |
| email     | string | <email@domain.com> | <p></p><p>The email your user used to sign-in in your platform</p> |

#### Sample Response <a href="#sample-response" id="sample-response"></a>

```
{ "email": "email@domain.com" }
```