curl --request GET \
  --url https://api.sprucecollective.co.uk/api/site-configs/{id}

{
  "additional_settings": {},
  "created_at": "<string>",
  "display_name": "<string>",
  "domain": "<string>",
  "email_provider": "<string>",
  "frontend_url": "<string>",
  "id": "<string>",
  "site_id": "<string>",
  "updated_at": "<string>"
}