Netatmo Binding - Rule when it's raining

Hi all, I successfully managed to add the rainmeter to my existing Netatmo configuration.
I am now wondering, if someone can give me a hand to implement rule(s) for it.

I would like to have multiple rules executing when it’s raining, e.g. to a HTTP-POST request, send telegram notification etc. The underlying action is something I should be able to determine myself but I’d be very grateful if someone can post his rules file triggering stuff when it’s said to be raining according to the rainmeter.

Thanks a lot in advance,