/// <summary>
        /// Get a user account's details. The returned object contains username, email address, account id, roles, group memberships and profile data.
        /// </summary>
        /// <param name="authenticationToken">Encrypted forms auth token identifying the requesting user.</param>
        /// <param name="uniqueIdentifier">The unique identifiers of the user.</param>
        /// <returns></returns>
        private static UserData GetUserData(string authenticationToken, string uniqueIdentifier)
        {
            /*
             * If you are unable to reference System.Service make sure that the project is configured to
             * use the full 4.0 framework and not the client profile.
             */
            var proxy = new UserManagementServiceClient();
               var result = proxy.GetUserData(authenticationToken, uniqueIdentifier);

            // Handle exceptions
            if (!result.CallSuccess)
            {
                Console.WriteLine(result.FailureMessage);
                return null;
            }

            return result.ResultData;
        }