Changes to Create an opt-out

the request's body type changed from no type to object

the response's body type changed from no type to object for status 201

removed SuccessResponse subschema #2 from the response body allOf list for the response status 201

added the non-success response with the status 401

added the required property success to the response with the 201 status

the endpoint scheme security bearerAuth was added to the API

endpoint added