Deprecated - Add new assignments to a continuous campaign instance.

The api to add new assignments v1.0 (v1.0/admin/instance/{id}/assignments) is deprecated. The end of life is 31-Dec-2025. Use the following alternative API: POST /v2.0/instances/{id}/assignments
API request is only valid for resources created using V1 version. When a V1 resource is modified by using the V2 API, it will be aligned as a V2 resource. Attempting to access V2-exclusive resources with the V1 API will result in a 400 error.
API for adding new assignments in a specific instance of a continuous campaign. If called by an application owner, the API can add assignments only for campaigns that the owner created or that contain at least one application that the owner owns.
Entitlements required: manageAccessWorkflow [Manage Access Work Flows].