curl --request GET \
  --url 'https://{domain}/api/v2/affiliate/campaigns/{id}?api-key='

{
  "message": "<string>",
  "success": true,
  "info": {
    "campaign": {
      "id": 123,
      "hash": "<string>",
      "name": "<string>",
      "affiliate_id": 123,
      "offer_id": 123,
      "commission_plan_id": 123,
      "traffic_source_id": 123,
      "landing_page_id": 123,
      "creative_id": 123,
      "status": 123,
      "created": 123,
      "updated": 123,
      "offer": {
        "id": 123,
        "title": "<string>"
      },
      "commission_plan": {
        "id": 123,
        "title": "<string>"
      },
      "traffic_source": {
        "id": 123,
        "title": "<string>"
      },
      "landing_page": {
        "id": 123,
        "title": "<string>"
      },
      "creative": {
        "id": 123,
        "title": "<string>"
      }
    }
  }
}