Process to enforce a judgment for the payment of money shall be a writ of execution, unless the court directs otherwise. The procedure on execution, in proceedings supplementary to and in aid of a judgment, and in proceedings on and in aid of execution shall be in the manner provided by the law of the State. In aid of the judgment or execution, the judgment creditor or his successor in interest when that interest appears of record, may obtain discovery from any person, including the judgment debtor, in the manner provided in these rules for taking depositions.