{
  "name": "轨迹",
  "actions": [
    {
      "direction": "forward",
      "timestamp": 858
    },
    {
      "direction": "stop",
      "timestamp": 1166
    },
    {
      "direction": "backward",
      "timestamp": 2327
    },
    {
      "direction": "stop",
      "timestamp": 2642
    }
  ]
}