| Name | Type | Description | Notes |
|---|---|---|---|
| CampaignId | int64 | ID of the campaign which generated the event | [default to null] |
| Count | int64 | Number of openings for the campaign | [default to null] |
| EventTime | string | UTC date-time of the event | [default to null] |
| Ip | string | IP from which the user has opened the email | [default to null] |