def get_updated(self, from_time, to_time=None):
        """
        Retrives a list of series that have changed on TheTVDB since a provided from time parameter and optionally to an
        specified to time.

        :param from_time: An epoch representation of the date from which to restrict the query to.
        :param to_time: An optional epcoh representation of the date to which to restrict the query to.
        :return: a python dictionary with either the result of the search or an error from TheTVDB.
        """

        arguments = locals()
        optional_parameters = {'to_time': 'toTime'}

        query_string = 'fromTime=%s&%s' % (from_time,
                                           utils.query_param_string_from_option_args(optional_parameters, arguments))

        raw_response = requests_util.run_request('get', self.API_BASE_URL + '/uodated/query?%s' % query_string,
                                                 headers=self.__get_header_with_auth())

        return self.parse_raw_response(raw_response)