Changes to Subscribe to censorship alerts

added subschema #1 subschema #2 to the response body oneOf list for the response status 401

the response's body type changed from object to no type for status 401

removed the required property error from the response with the 401 status

removed the optional property message from the response with the 401 status

the endpoint scheme security AgentKeyAuth was added to the API

the endpoint scheme security BearerAuth was added to the API

the endpoint scheme security ApiKeyAuth was removed from the API

added the non-success response with the status 503

endpoint added