Defines a new Entity. Event Types are grouped in Domains and then Entities. Entities are generally associated with the business application that is raising the Event. They are also defined to belong a specific domain.
This makes the new Entity visible on the Administrative Portal. The Administrative Portal is used by developers to manage their subscriptions.
Entity does not match the name associated with the Entity EGA
Domain-Entity combination already exitst.
<return_code/> -- http return code
<explanation/> -- see the table above
<error_data/> -- from request
Entity EGA is not a valid Person ID
"explanation": "Entity EGA is not a valid Person ID",