title: How to get entity of a channel using Telethon bot API?
body: <p>I cannot get_dialogs with Telethon Bot since the method is only available for a client. Therefore when I try to access the entity with its id I receive an error. How do I access an entity(channel) if I cannot parse all channels and neither access them by id? I would like to parse messages from a private group and use Telegram Bot for it.</p>