curl --request GET \
  --url https://api.hubapi.com/cms/v3/url-redirects/{urlRedirectId} \
  --header 'Authorization: Bearer <token>'

{
  "id": "3212223134",
  "createdAt": "2017-07-24T17:24:09.141Z",
  "updatedAt": "2017-07-24T17:24:09.141Z",
  "routePrefix": "http://test.hs-sites.com/(?P<page_slug>.*)",
  "destination": "http://www.example.online/{page_slug}",
  "isOnlyAfterNotFound": true,
  "isMatchFullUrl": true,
  "isMatchQueryString": false,
  "isPattern": false,
  "isTrailingSlashOptional": true,
  "isProtocolAgnostic": true
}