N.J. Stat. Ann. § 44:5-19.2

The lien shall state the name of the patient, the date of his admission, the rate at which payment is made by the county for such patient's medical care and hospitalization, the name of the institution in which such service was rendered and the amount due to the county for such service at the date of the filing of the lien and the rate of accumulation, if any shall occur, thereafter and shall be signed by the director of the board of chosen freeholders of the county or such person as shall be authorized so to do by resolution of said board.