In facebook chatbots, if you look at this documentation about Entry points you see that there is one option: Linking Ads, where you can identify your user in the Bot came from which of your ads on Facebook.
In my application, it is vital to know where my user came from, so I need to create unique links which end up in my Bot with some extra info, e.g. unique id, to help me solve the issue.
My question is how can I do this?
May be at the moment it is not possible to do it directly, but if anyone reasearched what additional parameters Facebook adds to the ads url that they are recognisible is also useful.
The Telegram counterpart of this feature is called: Deep Linking