Complex sentence: Upon the release from the Gulag, the former inmate would typically get a wolf ticket, confining him to an exile without the right to settle closer than 100 km from large urban centers.
Split into simpler sentences: Upon the release from the Gulag, the former inmate's rights would typically still be restricted for long period of time. Instead of regular documents, they would get a wolf ticket, confining them to an exile without the right to settle closer than 100 km from large urban centers.