interface User {
  id: string;
  name: string;
  surname?: string;
  phone: string;
  email?: string;
  roles: string[];
  [key: string]: unknown;
}

id: string;

name: string;

surname?: string;

phone: string;

email?: string;

roles: string[];

{
  "id": "123",
  "name": "Juan",
  "surname": "Perez",
  "phone": "+1234567890",
  "email": "juan@example.com",
  "roles": ["user", "premium"]
}