curl --request GET \
  --url https://api.mixpeek.com/v1/notifications/preferences/reminders

{
  "reminders": {
    "enabled": true,
    "onboarding_nudges": true,
    "engagement_reminders": true,
    "feature_tips": true,
    "quiet_hours_start": 123,
    "quiet_hours_end": 123
  }
}