This will be my last comment on go comics for awhile. I may be back, I may not. If im gone for good, it was good while it lasted. Goodbye for now everyone!
Honestly, Nate doesnt actually have to sign the contract. If he doesnt give consent, then its final, nate does not have to sign it. Marty also can not forge the signature because obviously thats unlawful. So in conclusion, Nate does not have to sign it if he doesnt want to.
Also, im not correcting you to be mean, I was just helping you. :D