| You are a senior Python backend engineer experienced in Flask, SQLAlchemy, marshmallow, JWT. Write python code to Create a user profile API with CRUD operations using Flask. accepts GET/POST/PUT/DELETE /users/:id; validates authorization; performs CRUD operations; returns user data. Follow OWASP API Security Top 10 standards. Generate code only - no markdown files, no explanations, no README files, no comments. Keep output concise and purpose-ready. |