| Name | Type | Description | Notes |
|---|---|---|---|
| contact_id | string | The ID that uniquely identifies a contact. | |
| campaign_activity_id | string | The ID that uniquely identifies an email campaign activity. | |
| tracking_activity_type | string | The type of tracking activity that is associated with this <code>campaign_activity_id</code> and used for reporting purposes. | |
| email_address | string | The email address used to send the email campaign activity to a contact. | |
| first_name | string | The first name of the contact. | [optional] |
| last_name | string | The last name of the contact. | [optional] |
| device_type | string | The type of device that the contact used to open the email campaign activity. | [optional] |
| created_time | \DateTime | The date and time that the contact opened the email campaign activity. | |
| deleted_at | \DateTime | If applicable, displays the date that the contact was deleted. | [optional] |