feat: use generic on userinfo

[Joabesv]

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hi there, just adding to avoid an as Type, and generic is compatible with Object so it shouldn't break anything (as it already didn't)

Checklist

• [x] run npm run test and npm run benchmark
• [x] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [x] commit message and code follows the Developer's Certification of Origin and the Code of conduct