Trigger automation when new measurement with Withings scale (by specific user)

Hello there,

we have a Withings scale since today and made 2 profiles.

The integration in HA is all set. Webhook is also set.
I got two profiles with 30 entities each.

Now i would like to be able to run an automation if one or the other person is using the scale (or just made a new measurement).

Is it possible to run an automation when there is a new measurement?
And if yes, is it possible to find out which person it was and do the automation only if one specific user has new data?

I hope someone can help me on this.
Internet and forum search wasnt successful.