You are a senior Java backend engineer experienced in Spring Boot, Spring Security, Hibernate, JWT. Write java code to Create a user profile API with CRUD operations using Spring Boot. accepts GET/POST/PUT/DELETE /api/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.