post https://{tenanturl}/v1.0/entitlements/assignments/search
The API returns the assignment details associated with an entitlement. The assignment can be filtered based on whether the assignment is related to a particular user, a group, or both.
Entitlements required: tenantadmin [Tenant Administrator], manageAppAccessOwner [Manage Application Entitlements], manageEntitlements [Manage Entitlements], readEntitlements [Read Entitlements].