curl --request GET \
  --url https://v2-nova-api.prod.czmx.in/org/{org_id}/analytics/calls

{
  "duration": {
    "avg_duration_seconds": 123,
    "max_duration_seconds": 123,
    "total_calls": 123,
    "total_duration_seconds": 123
  },
  "outcomes": [
    {
      "negative": 123,
      "outcome_key": "<string>",
      "positive": 123,
      "positive_rate_pct": 123,
      "total": 123
    }
  ],
  "period": {
    "end": "<string>",
    "start": "<string>"
  },
  "time_series": [
    {
      "busy": 123,
      "completed": 123,
      "date": "<string>",
      "failed": 123,
      "no_answer": 123,
      "total": 123
    }
  ]
}