// Leggi PEC impostata in preferenze
        private static async Task Scenario_5()
        {
            string account = Utils.GetAccount();
            string url     = Constants.REST_MULTIDIALOGO_STAGE_HOST + "/users/" + account + "/preferences";

            HttpResponseMessage response = await SendRequest(url, null, "Get");

            if (response == null || response.Content == null)
            {
                return;
            }

            string responseBody = await response.Content.ReadAsStringAsync();

            UserPreferencesData userPreferences = JsonConvert.DeserializeObject <UserPreferencesData>(responseBody);

            Console.WriteLine("Pec:");
            Console.WriteLine("---------");
            Console.WriteLine("Indirizzo");
            Console.WriteLine("---------");
            foreach (string p in userPreferences.GetPec())
            {
                Console.WriteLine(p);
            }
        }