{
  "categories": [
    { "category": "communication", "total": "4.500000", "count": 30, "pct": 45.0 },
    { "category": "data", "total": "3.200000", "count": 16, "pct": 32.0 },
    { "category": "infrastructure", "total": "2.300000", "count": 4, "pct": 23.0 }
  ],
  "total": "10.000000",
  "period_days": 30
}