{
  "defaults": {
    "time": 2000
  },
  "keyframes": [{
    "time": 1000,
    "actions": {
      "0": {
        "pwm": 1500,
        "duration": 3000
      }
    }
  }, {
    "actions": {
      "0": 2500
    }
  }, {
    "actions": {
      "0": 500
    }
  }]
}