curl --request GET \
  --url https://api.orq.ai/v2/guardrail-rules/{guardrail_rule_id} \
  --header 'Authorization: Bearer <token>'

{
  "_id": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "created_by_id": "<string>",
  "display_name": "<string>",
  "enabled": true,
  "project_id": "<string>",
  "timeout": 123,
  "updated_at": "2023-11-07T05:31:56Z",
  "updated_by_id": "<string>",
  "description": "<string>",
  "expression": {
    "cel": "<string>",
    "config": {}
  },
  "guardrails": [
    {
      "execute_on": "<string>",
      "id": "<string>"
    }
  ]
}