[Backend] — GDPR-style user data export & account deletion

[Olowodarey]

Background

Users can sign up and generate data across predictions, markets,
competitions, notifications, leaderboard, etc., but there is no way to
export all of their personal data or to delete an account. This is a common
legal/compliance requirement and is currently impossible.

Goal

A self-contained account module exposing (1) an asynchronous "export my data"
job that produces a downloadable JSON bundle, and (2) an account-deletion flow
that anonymizes/removes personal data while preserving on-chain-referenced
integrity.

Tasks

1. Entity src/account/entities/data-export-job.entity.ts:
2. AccountService.requestExport(userId) enqueues a job; a @Cron worker
3. AccountService.deleteAccount(userId) runs in a transaction:
4. Controller src/account/account.controller.ts (JWT-protected):
5. A cleanup @Cron that deletes expired export files + rows. Env EXPORT_DIR,

Acceptance Criteria

• POST /account/export returns a job id; polling shows pending → ready; the
• Export files expire and are cleaned up after the TTL; expired downloads 410.
• DELETE /account anonymizes the user, removes PII tables, and the user can no
• A user cannot download another user's export (403/404).

Files

src/account/* (new module, entity, service, controller, cron),
src/users/entities/user.entity.ts (add deleted_at),
src/config/env.validation.ts, src/app.module.ts,
src/migrations/<ts>-*.ts.

[jaynomyaro]

Hi! I’m a full-stack developer with a strong blockchain background. I’d love to handle this issue and can deliver a clean, reliable solution. Kindly assign it to me.

[Menjay7]

Hi! I’m a full-stack developer with a strong blockchain background. I’d love to handle this issue and can deliver a clean, reliable solution. Kindly assign it to me.

[Bhenzdizma]

Hello Maintainers,

My name is Lawrance, and I am a Fullstack Developer and Smart Contract Developer with experience building scalable web applications, backend systems, and blockchain solutions. I am writing to express my interest in contributing to your project and, specifically, taking ownership of this issue.

After reviewing the task, I believe it aligns well with my technical skills and experience. I have worked extensively with modern web technologies, API integrations, databases, and smart contract development, which has given me a strong foundation for understanding complex codebases and delivering high-quality solutions efficiently. I enjoy tackling challenging problems, writing clean and maintainable code, and ensuring that every implementation meets both functional and quality standards.

I am particularly interested in this issue because I enjoy contributing to meaningful open-source projects and collaborating with developers who are passionate about building valuable tools and products. Open source has played an important role in my growth as a developer, and I am always eager to give back to the community through thoughtful and reliable contributions.

I am confident that I can complete this task within 24 hours while maintaining a high standard of code quality. My approach typically involves thoroughly understanding the requirements, implementing a robust solution, testing it carefully, and ensuring that it integrates smoothly with the existing codebase. I also value clear communication and will be available to provide updates, discuss implementation details, and address any feedback throughout the process.

Beyond simply completing the issue, I strive to create solutions that are easy to maintain, well-documented, and aligned with the project's existing architecture and coding standards. My goal is always to make contributions that add long-term value to the project and improve the experience for both maintainers and users.

I would greatly appreciate being considered for this task and would be excited to contribute to the success of the project. I am available to start immediately and can dedicate the necessary time and attention to ensure the issue is resolved effectively.

Thank you for your time and consideration. I look forward to the opportunity to work with you and contribute to the project.

[EDOHWARES]

GM GM Maintainer. Pls can I work on this issue ? ETA - 12hrs

[OsagieCynthia]

Hi 👋 am a full-stack developer
I will love to work on this issue please assign

[grantfox-oss]

🦊 GrantFox — @Bhenzdizma has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #1005)
2. Your PR will be reviewed by the Arena1X maintainers

Good luck! Track your progress on GrantFox.