Revert "Revert "WOBS-3246: Adds new service and exception for new subscription management service""

This reverts commit ad5d3f0e5d489d2da803bc866f0982724e2de6c8.
Revert "Revert "WOBS-3246: Changes all references to dmpro service to new verlagsmanager service""

This reverts commit ed38ff197ef2b167d7881e80853aaec61ad6481f.