NotificationMarkUnreadEvent
constructor( type: String, createdAt: Date, rawCreatedAt: String, user: User, cid: String, channelType: String, channelId: String, totalUnreadCount: Int = 0, unreadChannels: Int = 0, channelLastMessageAt: Date?, unreadMessages: Int, firstUnreadMessageId: String, lastReadMessageAt: Date, lastReadMessageId: String?, threadId: String? = null, unreadThreads: Int = 0, unreadThreadMessages: Int? = null)