Push notification ios message problem

Push notifications been working well on android for months and they display a toast when they come in while the app is open and the usual push notification behaviour when it comes in with the app in the background. I’ve been trying to enable them on ios and they’re coming through in the background perfectly but when the app is open I can’t read the content of the message. The payload I’m receiving is this:


My guess is that the content is somehow stored in the gcm.message_id but I don’t know how to access this. It seems like something that should be straight forward but I can’t for the life of me figure it out!

Any help would be amazing. Thanks in advance.