usar HTML para no tener que escapar todos los caracteres

https://core.telegram.org/bots/api#formatting-options

app/jobs/telegram_job.rb

@@ -13,8 +13,8 @@ class TelegramJob < ApplicationJob
 
     piratas.find_each do |pirata|
       Telegram.bots[:default].send_message chat_id: pirata.telegram_user,
-        parse_mode: 'MarkdownV2',
-        text: "*#{payload['subject']}*\n\n#{payload['message']}"
+        parse_mode: 'HTML',
+        text: "<b>#{payload['subject']}</b>\n\n#{payload['message']}"
     end
   end