Earlier we sent our test cases for review to test lead and/or developer/BA. Now days one more reviewer called validation manager plays its role to validate the test case sheet, why? Again as per time industry the process is matured and more checks are implemented. Validation manager don't know anything about the functionality an still validating the sheet, how? Actually validation manager playing an important role to validate the document with all required standard so that all sheet looks same. Otherwise every tester writing skills are different. More validation manager task is to confirm that all requirement are covered in HLD/LLD and that are mapped in test sheet.
Hope it will help you to mature your company testing process if not implemented yet. Otherwise information update is always a good thing. Update me too if I have missed anything.