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

{
  "success": true,
  "message": "<string>",
  "data": [
    {
      "id": "<string>",
      "contact_id": "<string>",
      "name": "<string>",
      "phone": "<string>",
      "email": "<string>",
      "status": "<string>",
      "attempt_count": 123,
      "last_attempted_at": "<string>",
      "next_retry_at": "<string>",
      "call_duration_sec": 123,
      "error_message": "<string>",
      "call_session_id": "<string>",
      "tags": [
        "<string>"
      ]
    }
  ],
  "meta": {
    "total": 123,
    "limit": 123,
    "offset": 123
  }
}