Truncated extra data

I have integrated Sentry in Android app (v.1.7.5) and now im sending events with extra data (eventBuilder.withExtra). From what I could check it looks like Sentry is sending complete event from device but on server my extra fields are truncated to 400 characters. I have tried to find out why it happens but I still can’t fix it. At old Sentry version (1.6.0) there was no limit. Is it possible to fix it and how to do this?