curl --request GET \
  --url 'http://localhost:7575/v2/interactive-submission/preferred-package-version' \
  --header 'Authorization: Bearer $TOKEN'

{
  "packagePreference": {
    "packageReference": {},
    "synchronizerId": "string"
  }
}

{
  "code": "string",
  "cause": "string",
  "correlationId": "string",
  "traceId": "string",
  "context": {},
  "resources": [
    [
      "string"
    ]
  ],
  "errorCategory": 0,
  "grpcCodeValue": 0,
  "retryInfo": "string",
  "definiteAnswer": false
}