code: def update_user_properties(self, user_id, user_properties, headers=None, endpoint_url=None):
          
          endpoint_url = endpoint_url or self._endpoint_url
  
          url = endpoint_url + '/users/' + user_id + '/properties'
          headers = headers or self._default_headers()
          payload = user_properties
  
          response = requests.put(url, headers=headers, json=payload)
  
          return response
docs: Update a user's properties with values provided in "user_properties" dictionary
  
          :param str user_id: identified user's ID
          :param dict user_properties: user properties to update with a new values
          :param dict headers: custom request headers (if isn't set default values are used)
          :param str endpoint_url: where to send the request (if isn't set default value is used)
          :return: Response