This is the 14488th most frequent Russian word.
пoдписали
"Signed."
In this sentence, "подписали" is used to indicate that the parties formally signed an agreement.
Мы подписали договор о сотрудничестве.
We signed a cooperation agreement.
Here, "подписали" is used to show writing and signing a card.
Они подписали открытку для друга.
They wrote and signed a card for their friend.
In this context, "подписал" is used to denote the action of adding a signature to a drawing for identification.