Sure. My current Home Assisant Config is posted on github.
The scripts you are wanting are in the scripts directory and are named family_is_away and family_is_home so you can see how they are written.
When Life360 sees everyone has left, IFTTT triggers family_is_away. And when Life360 sees someone…
Funny you should ask. I actually cut out the HTTP to MQTT and just used IFTTT to connect straight to Home Assistant. It meant one less service to keep running and one less thing to break. And going that route let me leverage scripts I already had.