N.J. Stat. § 2A:167-4
The governor may, upon application for commutation of sentence of any person sentenced to imprisonment, order that such sentence be commuted upon such terms, conditions and limitations as the governor, in his discretion, may direct, as conditions precedent to the release of any such person from imprisonment; which terms, conditions and limitations shall be annexed to and form part of said order. Upon the filing of such order signed by the governor with the officer in whose custody such person may be, and after the acceptance by such person of the terms, conditions and limitations contained in said order, as evidenced by his signature affixed to the duplicate copy of such order to be kept in the files of the state parole board, such sentence shall thereupon be commuted in accordance with the terms, conditions and limitations of such order.
N.J.S. § 2A:167-4