curl --request GET \
  --url https://api.streamkap.com/cluster/scale/{operation_id} \
  --header 'Authorization: Bearer <token>'

{
  "operation_id": "<string>",
  "direction": "up",
  "status": "pending",
  "current_step": 123,
  "steps": [
    {
      "step": 123,
      "name": "<string>",
      "status": "pending",
      "started_at": "2023-11-07T05:31:56Z",
      "completed_at": "2023-11-07T05:31:56Z",
      "detail": "<string>"
    }
  ],
  "cluster_name": "<string>",
  "namespace": "<string>",
  "initiated_by": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "total_steps": 6,
  "completed_at": "2023-11-07T05:31:56Z",
  "error_message": "<string>",
  "timing_summary": {
    "node_scale_duration_s": 0,
    "workload_restart_duration_s": 0,
    "cleanup_duration_s": 0,
    "total_duration_s": 0
  }
}