curl --request GET \
  --url https://api.runflow.io/v1/runs/{run_id}/node-runs \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "run_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "node_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "flow_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "state_code": "<string>",
      "input": {},
      "output": {},
      "input_signature": "<string>",
      "preview_type": "<string>",
      "preview_value": "<string>",
      "duration_ms": 123,
      "cost": "<string>",
      "retry_count": 123,
      "error_message": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "started_at": "2023-11-07T05:31:56Z",
      "completed_at": "2023-11-07T05:31:56Z"
    }
  ],
  "first": "<string>",
  "next": "<string>",
  "previous": "<string>"
}