| Name | Type | Description | Notes |
|---|---|---|---|
| Action | string | Bulk action to perform | |
| ContactIds | List<string> | Contact IDs to update (max 500) | |
| Tags | List<string> | Tags to add or remove (required for addTags/removeTags) | [optional] |
| Groups | List<string> | Groups to add or remove (required for addGroups/removeGroups) | [optional] |