The rules of the forum must be respected as the rules of life must be respected, therefore I believe that the decision must be the administrator's and whatever the decision is you must accept it.
But I want to say my piece, you gave your account to a friend of yours to make him earn something and this could be a noble gesture, but to me it seems more like a joke because in the end you would have had a convenience, earning without making an effort and paying for the services to your friend. let's face it everything was convenient for both you and your friend. but you did not take into account all the work that the users of this forum do to keep everything in order, to the manager of the signature who was cheated by you, therefore I believe that a punishment is due to you regardless. I am not a judge but it will be up to someone to judge your excuses that even if noble are not strong enough to get you a pardon.