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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def json_response(obj, status='200 OK', content_type='application/json; charset=utf-8'):
 """Utility method for constructing a JSON response. :param dict obj: The dictionary to be serialized in JSON format :param str content_type: The content-type of the response :param str status: The HTTP status line :return: WbResponse JSON response :rtype: WbResponse """

        return WbResponse.text_response(json.dumps(obj), status, content_type)