#### 指令接口
POST /api/directive
```json
{"event": "beep:sound", "args": {"duration":5000, "times": 3}}  # 蜂鸣器
```

POST /api/event/beep
```json
{"duration":5000, "times": 3}
```

{
    "code": 200,
    "desc": "成功",
    "data": {}
}

{
    "code": 200,
    "desc": "成功",
    "data": [{}, {}]
}