I received form 3531 from the IRS, requesting a valid signature for my 1040 form. However there is no signature line in the form that says "sign here". Where do I sign??

[myriahduran]

Wet signature for 3531 correction form

[DoninGA]

Form 1040 page 2 at the bottom of the page below Line 38 and Third Party Designee.

[VolvoGirl]

Or are you over 65?  Is it a 1040 SR form?  Then the signature is on page 3.