# User information

Contains information about the user that is associated with a given event.


## Contact {#contact}

Contact information associated with the device at the time the event occurs.

- **`contact_id`** `string` **REQUIRED**

  The Contact identifier for the device.


**Used in:**

- [Open an event stream]({{< ref "/developer/rest-api/connect/operations/event-stream/" >}}#openeventstream)

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## User {#user}

The current state of the user when the event is emitted, including the contact ID and an optional named user ID.

- **`contact_id`** `string`

  The Contact identifier for the device.

- **`named_user_id`** `string`

  The Named User identifier for the device.


**Used in:**

- [Open an event stream]({{< ref "/developer/rest-api/connect/operations/event-stream/" >}}#openeventstream)

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