UpdateChatUnreadReactionCount.fromJson constructor
Parse from a json
Implementation
factory UpdateChatUnreadReactionCount.fromJson(Map<String, dynamic> json) =>
    UpdateChatUnreadReactionCount(
      chatId: json['chat_id'],
      unreadReactionCount: json['unread_reaction_count'],
      extra: json['@extra'],
      clientId: json['@client_id'],
    );