[TM-1677] Implement user verification BE

[Scriptmatico]

Pull request checklist

Please check if your PR fulfills the following requirements:

• Make sure you are requesting to pull a topic/feature/bugfix branch (right side). Don't request your master!
• Make sure you are making a pull request against the develop branch (left side). Also you should start your branch off our develop.
• Check the commit's or even all commits' message styles matches our requested structure.
• Check your code additions will fail neither code linting checks nor unit test.

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Documentation content changes
• Other (please describe):

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this introduce a breaking change?

• Yes
• No

Other information

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 4c2a137.

Command	Status	Duration	Result
nx run-many -t test --coverage --passWithNoTest...	✅ Succeeded	33s	View ↗
nx test unified-database-service --coverage	✅ Succeeded	<1s	View ↗
nx run-many -t lint build	✅ Succeeded	7s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-02-14 00:00:54 UTC

[pachonjcl]

LGTM