Retrieve Checkout Status

{
    "id": "8fdC56eo-cC99-46E1-B6AC-4asD8755B25C",
    "order": {
        "amount": 100.05,
        "invoice_number": "INV-20210231-0001",
        "currency": "MYR",
        "status": "PAID"
    },
    "payment": {
        "checkout_url": "https://sandbox.doku.com/checkout-link-v2/2ebffd22d23e436895ce5c38f7ddcf8620244712094712362",
        "channel": "EWALLET_TNG",
        "status": "SUCCESS",
        "state": "COMPLETED",
        "callback_url": "https://merchant.host/payment/callback"
    },
    "customer": {
        "id": "DOKU-CUST-001",
        "name": "John Doe",
        "email": "customer_email@test.com",
        "phone": "+60812345678",
        "country": "MY",
        "address": "Street 1"
    },
    "metadata": {
        "sample_key": "your value"
    }
}