SetWebhook
Use this method to specify a url and receive incoming updates via an outgoing webhook. Whenever there is an update for the bot, we will send an HTTPS POST request to the specified url, containing a JSON-serialized Update.
If you'd like to make sure that the Webhook request comes from Telegram, we recommend using a secret path in the url, e.g. https://www.example.com/. Since nobody else knows your bot's token, you can be pretty sure it's us.