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