FileEntity(群文件)

{
    "group_id": 0,
    "file_id": "string",
    "file_name": "string",
    "busid": 0,
    "file_size": 0,
    "upload_time": 0,
    "dead_time": 0,
    "modify_time": 0,
    "download_times": 0,
    "uploader": 0,
    "uploader_name": "string"
}