AnnouncementModel(公告模型)

{
    "id": 1,
    "publisher_id": 1,
    "user": {
        "id": 0,
        "username": "string",
        "email": "string",
        "cid": 0,
        "avatar_url": "string",
        "qq": 123456789,
        "rating": -1,
        "guest": false,
        "under_monitor": false,
        "under_solo": false,
        "solo_until": "0001-01-01T00:00:00Z",
        "tier2": true,
        "permission": 0,
        "total_pilot_time": 0,
        "total_atc_time": 0,
        "register_time": "2019-08-24T14:15:22Z"
    },
    "title": "string",
    "content": "string",
    "type": 0,
    "important": true,
    "force_show": true,
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
}