If you don't know each and every clause of the apartment rental then don't sign it until you do know it.
If needed and if possible, request help in interpreting the rental from a trustworthy source like a knowledgeable friend or relative or company or practitioner, or anybody else that will understand it and explain it for you personally.
If necessary receive legal counsel. If you are looking for no-fee apartments in Jersey City then there are various online sites from where you can choose the best apartments for yourself or for your family and friends.
It may cost extra funds if you don't qualify for free legal guidance, but the additional cost might save a whole lot of money and save you a whole lot of heartache and hassle later on.
If you don't agree to any of the conditions of that apartment rental or you also believe you cannot live until the tenant's duties, or if you aren't in agreement with any of the landlord's rights under the arrangement, then don't sign the rental until/or unless it could be altered to your own satisfaction.
In case the apartment rental arrangement can't be amended to satisfy your requirements and needs and comfort level then don't sign the lease and don't rent your apartment.
The Apartment Lease agreement that you register as a potential tenant won't change as soon as you turn into the true tenant of the apartment.