Changes to Create a new competition

the request property category became required

the request property event became required

the request property kind became required

the request property n_follows became required

the request property n_leaders became required

the request property name became required

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

the response's body type changed from no type to integer for status 200

the response's body type changed from no type to object for status 400

added the new optional request property category

added the new optional request property event

added the new optional request property kind

added the new optional request property n_follows

added the new optional request property n_leaders

added the new optional request property name

added the optional property message to the response with the 400 status