key

{
    "courseId": 0,
    "courseName": "string",
    "courseIntroduction": "string",
    "coverAttachment": {
        "previewUrl": "string",
        "temporaryUrl": "string",
        "id": 0
    },
    "totalDuration": 0,
    "studentCount": 0,
    "courseType": 0,
    "courseTypeName": "string",
    "courseCategoryId": 0,
    "courseCategoryName": "string",
    "productCategoryId": "string",
    "productCategoryName": "string",
    "certificationLevel": "string",
    "publishDate": "string",
    "needUpgrade": true
}