Changes to Update subscriber list

added the new optional request property allowMemberUnsubscribe

added the optional property issues to the response with the 401 status

added the optional property issues to the response with the 404 status

added the optional property issues to the response with the 500 status

added the optional property list/allowMemberUnsubscribe to the response with the 200 status

the request property description became not nullable

added the optional property list/activeSubscriberCount to the response with the 200 status

added the optional property list/subscriberCount to the response with the 200 status

added the optional property retryable to the response with the 401 status

added the optional property retryable to the response with the 404 status

added the optional property retryable to the response with the 500 status

added the optional property code to the response with the 401 status

added the optional property code to the response with the 404 status

added the optional property code to the response with the 500 status

the response property success became optional for the status 401

the response property success became optional for the status 404

the response property success became optional for the status 500

endpoint added