curl --request GET \
  --url http://localhost:3091/v1/api/superadmin/analytics/announcements \
  --header 'Authorization: Bearer <token>'

{
  "createdByPeriod": [
    {
      "period": "<string>",
      "count": 123,
      "amount": 123
    }
  ],
  "bookingRate": 123,
  "totalAnnouncements": 123,
  "announcementsWithBookings": 123,
  "popularRoutes": [
    {
      "departureCity": "<string>",
      "arrivalCity": "<string>",
      "bookingCount": 123
    }
  ]
}