AppDelegate.swift

    func application(application: UIApplication, handleWatchKitExtensionRequest userInfo: [NSObject : AnyObject]?, reply: ([NSObject : AnyObject]?) -> Void) {
        let message = userInfo?["message"] as! String

        let event = Event(name: "test", details: "test", date:NSDate())

        NSKeyedArchiver.setClassName("Event", forClass: Event.self)
        NSKeyedArchiver.archivedDataWithRootObject(event)
        
        let dictionary = ["event" : event]
        
        reply(dictionary)
    }