my summary (not a native speaker and pasting the full translation was too messy).

the nordvpn app for android is sending device data to multiple trackers.

It contains all the normal things you probably expect, screen size, manufacturer, uuids for advertising etc but also some strangely specific stuff.

This includes sensor data (Gyroscope, Accelerometer, etc)

from the json sent to "AppsFlyer":

    sensors":[{"sT":4,"sV":"BOSCH","sVE":[0.015487671,0.022598267,-0.013870239],"sVS":[-0.061203003,-0.059432983,0.04260254],"sN":"BMI160 Gyroscope -Wakeup Secondary"},{"sT":1,"sV":"BOSCH","sVE":[0.6355438,6.844879,7.2422333],"sVS":[0.1184082,6.7634735,7.1632233],"sN":"BMI160 Accelerometer -Wakeup Secondary"},{"sT":4,"sV":"BOSCH","sVE":[0.015487671,0.022598267,-0.013870239],"sVS":[-0.061203003,-0.059432983,0.04260254],"sN":"BMI160 Gyroscope"},{"sT":2,"sV":"Yamaha","sVE":[46.717834,-18.313599,-34.529114],"sVS":[46.717834,-20.56427,-33.029175],"sN":"YAS537 Magnetometer"},{"sT":2,"sV":"Yamaha","sVE":[46.717834,-18.313599,-34.529114],"sVS":[46.717834,-20.56427,-33.029175],"sN":"YAS537 Magnetometer -Wakeup Secondary"},{"sT":1,"sV":"BOSCH","sVE":[0.6355438,6.844879,7.2422333],"sVS":[0.1184082,6.7634735,7.1632233],"sN":"BMI160 Accelerometer"}