Telegram_bot.send_message service target telegram username

Feature Requests
1

Hi,

I realize that HA is not only useful for home but it can be useful for work as well. I wanted to send Telegram messages to my clients automatically using HA. I have the username of my clients for example; t.me/[client username].

Please support send Telegram message using any username as target via the telegram_bot.send_message service.

Example:

      - service: telegram_bot.send_message
        data_template:
          message: "Good morning. Please pay your bill."
          title: ''
          target: 'client_username'

At the moment, it gives this error:

expected int @ data[‘target’][0]