User

{
    "id": "019b4138-e0af-70b9-8f0c-6ea97d495dfa",
    "username": "johndoe",
    "email": "user@example.com",
    "firstName": "John",
    "lastName": "Doe",
    "phone": "+12025551234",
    "createdAt": "2025-12-21T13:56:23Z",
    "updatedAt": "2025-12-21T13:56:23Z",
    "tenantId": "550e8400-e29b-41d4-a716-446655440000",
    "preferences": {
        "newsletter": true,
        "notifications": true
    }
}