How to indicate middle name is preferred name in professional email signature

In almost all situations, I prefer to be addressed by my legal middle name. However, in the email signature (what’s automatically included at the bottom of the email) of my university email, I must include my legal first name, leading most people in emails to address me by it rather than my middle name. I was wondering how I could indicate in my (professional) email signature that I prefer to be addressed by my middle name. Would I write: FirstName "MiddleName" LastName?