check_strict = {
    'check_id': str,
    'title': str,
    'short_desc': str,
    'tags': [str],
    'desc': str,
}

check_info = check_strict.copy()
check_info.update({
    'status': str,
    'started_ts': datetime,
    'tags': [str],
    'question_current': str,
    'user': user,
})

question = {
    'id': str,
    'title': str,
    'desc': str,
    'next': str,
    'type': str,
    'choices': [{
        'id': str,
        'title': str,
        'desc': str,
        'cost': int,
    }],
}

question_radio = question.copy()
question_radio.update({
    'answer': str,
})

question_checklist = question.copy()
question_checklist.update({
    'answer': [str],
})