Im trying to add a Catalog Owner to my Catalog in Azure Identity Management. This doesn’t seem to be documented anywhere. I’ve tried different request bodies using both the PS Graph Module and the graph API directly (PATCH /identityGovernance/entitlementManagement/catalogs/{id}), but the patch call always returns a 204 no matter the properties.

E.g.:

$body = @{
@{
            "@odata.type" = "#microsoft.graph.singleUser"
            userId = $userId
        }
}
Update-MgEntitlementManagementCatalog -AccessPackageCatalogId $id -BodyParameter $body

Is there any way to do this? Or is manually in the portal the only option?