def verify_input(json_data):
    """
    Verifies the validity of an API request content

    :param json_data: Parsed JSON accepted from API call
    :type json_data: dict
    :return: Data for the the process function
    """

    # callback_uri is needed to sent the responses to
    if 'callback_uri' not in json_data:
        raise ValueError('callback_uri not supplied')

    return json_data