{
  "history": {
    "time": ["...", "..."],
    "system": {
      "cpu": [0, 10, 20, ...],
      "memory": [0, 15, 30, ...]
    }
  },
  "alerts": [...],
  "system": {
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    "memory": 45.2,
    "disk": 30.7
  }
}