How to catch the event adding a bot to the chat?

Question

Python

Hello Can you please tell me how to catch the event adding a bot to a group?

@dp.message_handler(content_types=['????'])
async def newschat(message: types.Message):
    await message.answer(f"Спасибо что добавили в чат!")

Answer 1

@dp.message_handler(content_types=['new_chat_members'])
async def send_welcome(message: types.Message):
    bot_obj = await bot.get_me()
    bot_id = bot_obj.id
    
    for chat_member in message.new_chat_members:
        if chat_member.id == bot_id:
            await message.reply("Hi!\nI'm EchoBot!\nPowered by aiogram.")