Fix CitySDK exporter, correct id type.
Fix CitySDK exporter, correct id type.

City-of-Helsinki/linkedevents,City-of-Helsinki/linkedevents,aapris/linkedevents,tuomas777/linkedevents,kooditiimi/linkedevents,aapris/linkedevents,aapris/linkedevents,kooditiimi/linkedevents,City-of-Helsinki/linkedevents,kooditiimi/linkedevents,tuomas777/linkedevents,tuomas777/linkedevents,kooditiimi/linkedevents