curl --request GET \
  --url https://api.automationhub.one/api:RIKjHOHm/campaigns/{campaign_id} \
  --header 'X-API-Key: <api-key>'

{
  "campaign_id": "<string>",
  "status": "<string>",
  "campaign_name": "<string>",
  "external_ref": "<string>",
  "counts": {
    "total_recipients": 123,
    "pending": 123,
    "sent": 123,
    "failed": 123,
    "delivered": 123,
    "read": 123,
    "responded": 123
  },
  "recipients": [
    {
      "phone": "<string>",
      "status": "<string>",
      "sent_at": "<string>",
      "delivered_at": "<string>",
      "read_at": "<string>",
      "responded_at": "<string>",
      "error_message": "<string>"
    }
  ]
}