iOS notification body different to android notification body?

[Hajarat]

Hi, I'm trying to get iOS notifications to work on my app on testflight, and they seem to work, the only problem is that I have a reducer that saves the notifications the user receives to state which I created while working on android, where it works perfectly. However when the reducer method that saves the notification runs for iOS, the app crashes. This is why I'm wondering is the notification object received by iOS dissimilar to the one received by android?