curl --request GET \
  --url https://saas.pads365.com/rdx/NDS.Services.Authentication/api/v1/ExternalUserGroup/{id}

{
  "Succeeded": true,
  "Message": "<string>",
  "Code": "<string>",
  "ExternalUserGroup": {
    "Id": "<string>",
    "ExternalAuthenticationProviderId": "<string>",
    "ExternalId": "<string>",
    "Name": "<string>"
  }
}