Whenever such merchandise is consigned to a deceased person, or to an insolvent person who has assigned the same for the benefit of his creditors, the executor or administrator, or the assignee of such person or trustee in a case under title 11, shall be considered as the importer of record; when consigned to a partnership the declaration of one of the partners only shall be required, and when consigned to a corporation such declaration may be made by any officer of such corporation. Whether the importer of record is an individual, a partnership, or a corporation, the declaration may be made by any person who has knowledge of the facts and who is specifically authorized by such individual, a member of such partnership, or an officer of such corporation to make such declaration.