It’s not a hex editor but if your on linux and you have base58 installed (sudo apt install base58 ) You could try something like this from the command line:
echo YourID | base58 -d | dd bs=1 skip=1 count=32 > New-storage-dir-verification
Just replace “YourID” with your actual node id. It will generate a file called: New-storage-dir-verification, just rename it to storage-dir-verification