<p>A map of the endpoint attributes. Attributes in this map include the following:</p> <ul> <li> <p> <code>CustomUserData</code> – arbitrary user data to associate with the endpoint. Amazon SNS does not use this data. The data must be in UTF-8 format and less than 2KB.</p> </li> <li> <p> <code>Enabled</code> – flag that enables/disables delivery to the endpoint. Amazon SNS will set this to false when a notification service indicates to Amazon SNS that the endpoint is invalid. Users can set it back to true, typically after updating Token.</p> </li> <li> <p> <code>Token</code> – device token, also referred to as a registration id, for an app and mobile device. This is returned from the notification service when an app and mobile device are registered with the notification service.</p> </li> </ul>