curl --request GET \
  --url https://api.samora.ai/v1/external/campaigns/{agent_id} \
  --header 'X-API-Key: <api-key>'

{
  "message": "<string>",
  "data": {
    "campaigns": [
      {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "name": "<string>",
        "agent_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "agent_name": "<string>",
        "retry_config": {
          "max_retries": 2,
          "retry_delay_minutes": 30,
          "retry_on": [
            "UNANSWERED",
            "REJECTED",
            "VOICEMAIL"
          ]
        },
        "call_stats": {
          "total": 123,
          "finished": 123,
          "pending": 123,
          "unanswered": 123,
          "failed": 123,
          "total_duration": "<string>"
        },
        "created_at": "2023-11-07T05:31:56Z",
        "updated_at": "2023-11-07T05:31:56Z"
      }
    ],
    "page": 123,
    "page_size": 123,
    "total": 123
  }
}