def get_body(self):
        """Return "data" value on self.data

        :return: data to send
        :rtype: str
        """
        if self.default_body:
            return self.default_body
        data = self.data.get('data')
        if isinstance(data, dict):
            return json.dumps(data)
        return data
Return "data" value on self.data

        :return: data to send
        :rtype: str