抖音热点活动日历：按日期和城市查看活动列表

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      "title": "Body_fetch_hot_calendar_list_api_v1_douyin_billboard_fetch_hot_calendar_list_post",
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        "end_date": {
          "type": "integer",
          "title": "End Date",
          "default": 1735488000,
          "description": "快照结束时间，格式为 10 位时间戳"
        },
        "city_code": {
          "type": "string",
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          "default": "",
          "description": "城市编码，从城市列表获取；留空表示全部"
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        "start_date": {
          "type": "integer",
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        "category_code": {
          "type": "string",
          "title": "Category Code",
          "default": "",
          "description": "热点榜分类编码，从热点榜分类获取；留空表示全部"
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