RBC writes about it. 

It is planned that the contract can be signed by persons who have reached the age of 18, have a secondary general education, are not enrolled in the reserve and are subject to conscription.

The initiators of the bill were deputies Vasily Piskarev, Andrei Kartapolov, Ernest Valeev, Anatoly Vyborny and Dmitry Savelyev.

Amendments to the law reduce the age and educational qualifications, since earlier only citizens with a secondary vocational education could serve under a contract. 

Earlier, Russian President Vladimir Putin signed a law abolishing the upper limit of the age limit for concluding the first contract for military service.

In accordance with it, citizens (foreign citizens) over the age of 18 have the right to conclude the first contract for military service.