query ValidateWorkflowDraft($id: ID!) {
  validateWorkflowDraft(id: $id) {
    valid
    diagnostics {
      severity
      code
      message
      nodeId
      triggerId
      path
    }
  }
}

{
  "id": "id"
}

{
  "data": {
    "validateWorkflowDraft": {
      "valid": true,
      "diagnostics": [
        {
          "severity": "string",
          "code": "string",
          "message": "string",
          "nodeId": "id",
          "triggerId": "id",
          "path": "string"
        }
      ]
    }
  }
}