curl --request GET \
  --url https://api.ravan.ai/api/v1/contacts/{id}/calls \
  --header 'X-Api-Key: <api-key>'

{
  "success": true,
  "message": "<string>",
  "data": [
    {
      "id": "<string>",
      "agent_id": "<string>",
      "agent_name": "<string>",
      "organization_id": "<string>",
      "room_id": "<string>",
      "caller_number": "<string>",
      "callee_number": "<string>",
      "channel": "<string>",
      "status": "<string>",
      "summary": "<string>",
      "metadata": {},
      "disconnect_reason": "<string>",
      "call_latency_ms": 123,
      "duration_sec": 123,
      "recording_url": "<string>",
      "cost_total": 123,
      "started_at": "<string>",
      "ended_at": "<string>"
    }
  ]
}