The WWE2K15 Savegame is protected with a custom checksum, we can't edit it atm. But it is possible to edit it directly in RAM. We use the awesome Cheat Engine App to do it.
Create a backup from your Save.
Download, install and start Cheat Engine but make sure you use the 64bit version.
Now start WWE2K15 in window mode and go to the main menu.
Go to cheat engine and click "Open Process" which is top-left computer icon
Open the process named "WWE2K15_x64.exe"
Now press Ctrl