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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 verify_response(self, response_json, signed_id_name='transactionid'):
 """ Verify the response message. :param response_json: :param signed_id_name: :return: """

        auth_json = response_json.get('auth', {})

        nonce = auth_json.get('nonce', '')
        timestamp = auth_json.get('timestamp', '')
        signature = binascii.unhexlify(auth_json.get('signature', ''))

        signed_id = response_json.get(signed_id_name, '')

        return self.verify_signature(signature=signature, nonce=nonce, timestamp=timestamp, signed_id=signed_id)