> For the complete documentation index, see [llms.txt](https://docs.cotter.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cotter.app/api-reference/event-object.md).

# Event Object

An Event Object describes an **Authentication Event**, and serves as a "proof" that the user has successfully authenticated. The field `approved` tells you whether this event is approved, and the `signature` can be validated to make sure that this "proof" is generated by Cotter.

```javascript
{
  "ID": 610152,
  "user_id": "61e51b1b-55cd-4b00-9cc0-4b71fa0eb00f",
  "client_user_id": "",
  "issuer": "abababab-abab-abab-abab-ababab",
  "event": "LOGIN_WITH_DEVICE",
  "ip": "73.15.208.6",
  "location": "Orinda",
  "timestamp": "1591935918",
  "method": "TRUSTED_DEVICE",
  "new": false,
  "approved": true,
  "signature": "BqBQphW2G1QLn5/ZcrcRVJ/S..."
}
```

| Field            | Description                                                                                                                                          |
| ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------- |
| ID               | The event ID                                                                                                                                         |
| user\_id         | Cotter's User ID of the user that requested this authentication event                                                                                |
| client\_user\_id | *\[DEPRECATED]*  Your User ID for the user in your server                                                                                            |
| issuer           | Your `API_KEY_ID`                                                                                                                                    |
| event            | A tag that describes the authentication event.                                                                                                       |
| ip               | The user's IP address when requesting authentication                                                                                                 |
| location         | The user's location when requesting authentication                                                                                                   |
| timestamp        | The UNIX timestamp when the user requested for authentication                                                                                        |
| method           | The authentication method that was used: `TRUSTED_DEVICE` , `PIN` , or `BIOMETRIC`                                                                   |
| new              | Whether or not this is a new request. This is used for **pending requests** where the user need to tap on their device to approve the login request. |
| approved         | Whether or not this authentication request was approved                                                                                              |
| signature        | A signature from Cotter that prove that this Event Object is generated by Cotter.                                                                    |

To use this Event Object, you should validate it's authenticity following this guide:

{% content-ref url="/pages/-M2pWffm56vOPZk07RZ7" %}
[Validating Cotter's Event Response](/older-api/validating-cotters-event-response.md)
{% endcontent-ref %}


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