[{ "nickname" : String, "mail" : String, "password" : String} ]
[{ "nickname" : String (255), "mail" : String (255), "password" : String (255)} ]
[{ "name" : String (255), "bio" : String (255), "maxPlayer" : Int} ]
=> /tournament/update/(\d+) : To update an tournament, replace (\d+) with the id of the tournament, example
[{ "name" : String (255), "bio" : String (255), "maxPlayer" : Int} ]