{
  "accountId": "demo-account",
  "currency": "USD",
  "timeRange": { "from": "2026-08-21", "to": "2026-08-27" },
  "campaigns": [
    { "id": "cmp_brand", "name": "Brand Search", "spend": 840.25, "impressions": 121400, "clicks": 5630, "conversions": 392, "revenue": 8232.00 },
    { "id": "cmp_prospect", "name": "Prospecting Video", "spend": 2310.50, "impressions": 540200, "clicks": 7280, "conversions": 118, "revenue": 3186.00 },
    { "id": "cmp_retarget", "name": "Retargeting", "spend": 1264.75, "impressions": 98200, "clicks": 4515, "conversions": 244, "revenue": 6832.00 }
  ]
}