GroupUploadNoticeEvent(群文件上传)

{
    "time": 1640995200,
    "self_id": 123456789,
    "post_type": "notice",
    "notice_type": "group_upload",
    "group_id": 0,
    "user_id": 0,
    "file": {
        "id": "string",
        "name": "string",
        "size": 0,
        "busid": 0
    }
}