curl --request GET \
  --url https://api.eu.bronto.io/users/{userId}/preferences \
  --header 'X-BRONTO-API-KEY: <api-key>'

{
  "preferences": {
    "theme": "<string>",
    "preferred_org": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "timezone": "<string>",
    "filter_null_groups": "<string>"
  }
}