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

{
  "success": true,
  "message": "<string>",
  "data": [
    {
      "id": "<string>",
      "organizationId": "<string>",
      "name": "<string>",
      "agentId": "<string>",
      "phoneNumberId": "<string>",
      "fromPhoneNumber": "<string>",
      "status": "<string>",
      "executionStatus": "<string>",
      "schedule": {
        "start": "<string>",
        "end": "<string>",
        "windowStart": "<string>",
        "windowEnd": "<string>",
        "windowDays": [
          {}
        ],
        "timezone": "<string>",
        "maxConcurrent": 123,
        "retryAttempts": 123,
        "retryGapMin": 123
      },
      "contactStats": {
        "total": 123,
        "contacted": 123,
        "successful": 123,
        "failed": 123,
        "noAnswer": 123,
        "pending": 123,
        "inProgress": 123
      },
      "startedAt": "<string>",
      "completedAt": "<string>",
      "createdAt": "<string>",
      "updatedAt": "<string>"
    }
  ],
  "meta": {
    "total": 123,
    "limit": 123,
    "offset": 123
  }
}