| Name | Type | Description | Notes |
|---|---|---|---|
| event | String | The type of the event. Can be one of the following: ['campaign_state_changed', 'campaign_ruleset_changed', 'campaign_edited', 'campaign_created', 'campaign_deleted'] | |
| campaign | Campaign | The campaign whose state changed. | |
| oldState | String | The campaign's old state. Can be one of the following: ['running', 'disabled', 'scheduled', 'expired', 'archived'] | |
| newState | String | The campaign's new state. Can be one of the following: ['running', 'disabled', 'scheduled', 'expired', 'archived'] | |
| ruleset | Ruleset | The current ruleset. | [optional] |
| placeholders | List<PlaceholderDetails> | The current details of the placeholders in the campaign. | [optional] |