It's normal for you to sign the manager. If you sign the project manager, there is a problem. If there is no problem, no one will pursue it. If there is a problem, the project manager can deny it, but you can't escape. We must be careful when signing this matter. If we can get the project manager to sign, let him sign. If he entrusts you to sign, he needs a power of attorney and finally signs your name.

Of course, this is all a matter of principle. In practice, there will be many uncertain factors, which are skillful. It's hard to say here.