Obtain title key from ticket file

You do not need the title key contained in the ticket. You have a .WUD image which is a 1:1 disc image which contains an encrypted partition that holds the disc ticket which contains the title key. Why would UWizard need the ticket if it can just acquire it from the disc(image)? What you need is the disc key, sometimes confusingly referred to as a WUD title key. If you download a WUD from a source that follows scene rules, it should be bundled with the disc key, either as a game.key, or disc.key file. It may have also shipped with a .nfo file that when opened as an image will have the disc key.

 

I just searched and I was able to easily find the disc key for Mass Effect 3 Special Edition for USA region.
If you cant find it then you need to get better with Google my friend.