RegisterResponse

{
    "success": true,
    "data": {
        "message": "Registration successful. Please verify your email.",
        "user": {
            "id": 1,
            "email": "user@example.com",
            "full_name": "John Doe",
            "phone": "+6281234567890",
            "role": "institution",
            "confirmed": true,
            "status": "active"
        },
        "verification": {
            "expires_at": "2019-08-24T14:15:22.123Z",
            "provider": "email"
        }
    }
}