Complex sentence: Such property rights as elements of the descendant's estate are--under several national laws, e.g. in Switzerland so called subjective rights (like outstanding debits, property, intellectual property rights and others) as well as possession-based rights of the testator.
Split into simpler sentences: Such property rights as elements of the descendant's estate may be enshrined in laws, such as in Switzerland. A digital estate may include outstanding debts and intellectual property rights as well as possession-based rights of the testator.