CourseDTO

{
    "id": 0,
    "name": "string",
    "categoryIdLv1": 0,
    "categoryIdLv2": 0,
    "categoryIdLv3": 0,
    "coverUrl": "string",
    "createTime": "string",
    "updateTime": "string",
    "price": 0,
    "duration": 0,
    "validDuration": 0,
    "free": true,
    "publishTime": "string",
    "sections": 0,
    "status": -127,
    "teacher": 0,
    "courseType": 0,
    "updater": 0,
    "step": 0,
    "sold": 0,
    "score": 0,
    "enable": 0
}