model.UnionAndCourseId

{
    "begin_at": 0,
    "buy_mode": 0,
    "course_id": "string",
    "created_at": 0,
    "discount_type": 0,
    "end_at": 0,
    "head_img": "string",
    "id": 0,
    "is_limited": 0,
    "max_buy_num": 0,
    "min_buy_num": 0,
    "org_id": "string",
    "share_desc": "string",
    "share_img": "string",
    "share_title": "string",
    "title": "string",
    "union_bg_color": "string",
    "updated_at": 0
}