SNJSON.swift

struct User:Mappable{
    let id:Int
    let name:String

    init(map: Mapper) throws {
        self.id = try map.from("id")
        self.name = try map.from("name")
    }
}

...

myProvider.request(Route(path:"/user/1234")).responseObject { (response:Response<User>) in
    switch response.result{
    case .success(let user):
        print("success: user name is \(user.lastName)")
    case .failure(let error):
        print("error: \(error)") //Will print an error, if the User cannot be parsed. (if the User initializer has thrown an error)
    }
}