curl --request PATCH \
  --url https://api.example.com/api/auth/register-switch \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "enabled": true
}
'

{
  "success": true,
  "registration_enabled": true,
  "message": "<string>"
}