curl --request POST \
  --url https://api.pingproxies.com/1.0/public/user/checkout/create \
  --header 'Content-Type: <content-type>' \
  --header 'X-API-Private-Key: <api-key>' \
  --header 'X-API-Public-Key: <api-key>' \
  --data '{
  "cycle_interval": "month",
  "cycle_interval_count": 1,
  "product_code": "isp_us",
  "promotional_code": "HALFOFF",
  "quantity": 5
}'

{
  "data": {
    "created": [
      "API-1234-5678"
    ],
    "invoice_is_paid": true,
    "invoice_url": "https://invoice.stripe.com/i/acct_1H7dAB2BUlqim5l/test_123",
    "proxies": [
      {
        "asn_id": 7018,
        "asn_name": "AT&T Enterprises, LLC",
        "city_example_postcode": "75202",
        "city_id": 75202,
        "city_latitude": 32.7767,
        "city_longitude": -96.797,
        "city_name": "Dallas",
        "city_timezone": "America/Chicago",
        "country_id": "us",
        "country_name": "United States",
        "customer_id": 1976,
        "default_proxy_user_password": "apple1984",
        "default_proxy_user_username": "stevejobs",
        "ip_address_id_v4": "107.225.73.142",
        "ip_address_id_v6": "2600:1000:b12a:6351:8523:997e:93c4:f124",
        "proxy_http_port": 8080,
        "proxy_id": "7a018d34-76c2-4c23-b14d-f7b9a7054e25",
        "proxy_ip_address": "107.225.73.142",
        "proxy_ip_address_v6": "2600:1000:b12a:6351:8523:997e:93c4:f124",
        "proxy_last_update_datetime": "2023-11-07T05:31:56Z",
        "proxy_password": "DHf3PSQXQ7rw1v9",
        "proxy_protocol": "ipv4",
        "proxy_socks5_port": 1080,
        "proxy_status": "in_use",
        "proxy_type": "isp",
        "proxy_username": "att7018user",
        "service_id": "API-1234-5678",
        "subdivision_id": "us-tx",
        "subdivision_name": "Texas",
        "subnet_id": "107.225.72.0/22",
        "subnet_id_v6": "2600:1000::/28"
      }
    ],
    "proxy_edited": [
      "7a018d34-76c2-4c23-b14d-f7b9a7054e25"
    ],
    "residential_ledger_created": [],
    "service": {
      "country_id": "us",
      "customer_id": 1976,
      "open_invoice_id": "null",
      "payment_method_id": "null",
      "product_id": "prod_ATT7018",
      "service_creation_datetime": "2023-11-07T05:31:56Z",
      "service_cycle": "1:month",
      "service_dispatch_datetime": "2023-11-07T05:31:56Z",
      "service_earliest_cancellation_datetime": "2023-11-07T05:31:56Z",
      "service_expiry_datetime": "2023-11-07T05:31:56Z",
      "service_fulfillment_filter": {
        "asn_id": 7018
      },
      "service_id": "API-1234-5678",
      "service_image": "https://files.stripe.com/links/MDB8YWNjdF8xSDdkOEFCMkJVbHFpbTVsfGZsX2xpdmVfZFZ6TTZjUG01Q0NuR1IzSTZsVzNjVVFX00kUPPfQE9",
      "service_is_automatic_collection": true,
      "service_is_cancellable": true,
      "service_is_off_catalog": false,
      "service_is_pending_cancellation": false,
      "service_is_reconfigurable": true,
      "service_last_update_datetime": "2023-11-07T05:31:56Z",
      "service_metadata": {},
      "service_name": "AT&T ISP Proxies [US]",
      "service_price_id": "price_1QJx2DB2BUlqim5lxmO3aT2v",
      "service_promotional_code": "HALFOFF",
      "service_protocol": "ipv4",
      "service_quantity": 5,
      "service_status": "active",
      "service_subscription_id": "sub_1QxSHmB2BUlqim5lTUH8HvKa",
      "service_subscription_is_paused": false,
      "service_total": 450,
      "service_type": "isp",
      "subscription_schedule_id": "null"
    },
    "service_id": "API-1234-5678"
  },
  "message": "Successfully created checkout and paid with credit. Your service will be provisioned shortly."
}