Retrieve a Subscription Invoice

curl "https://api.lemonsqueezy.com/v1/subscription-invoices/1" \
  -H 'Accept: application/vnd.api+json' \
  -H 'Content-Type: application/vnd.api+json' \
  -H 'Authorization: Bearer {api_key}'

{
  "jsonapi": {
    "version": "1.0"
  },
  "links": {
    "self": "https://api.lemonsqueezy.com/v1/subscription-invoices/1"
  },
  "data": {
    "type": "subscription-invoices",
    "id": "1",
    "attributes": {
      "store_id": 1,
      "subscription_id": 1,
      "customer_id": 1,
      "user_name": "John Doe",
      "user_email": "[email protected]",
      "billing_reason": "initial",
      "card_brand": "visa",
      "card_last_four": "4242",
      "currency": "USD",
      "currency_rate": "1.00000000",
      "status": "paid",
      "status_formatted": "Paid",
      "refunded": false,
      "refunded_at": null,
      "subtotal": 999,
      "discount_total": 0,
      "tax": 0,
      "tax_inclusive": false,
      "total": 999,
      "subtotal_usd": 999,
      "discount_total_usd": 0,
      "tax_usd": 0,
      "total_usd": 999,
      "subtotal_formatted": "$9.99",
      "discount_total_formatted": "$0.00",
      "tax_formatted": "$0.00",
      "total_formatted": "$9.99",
      "urls": {
        "invoice_url": "https://app.lemonsqueezy.com/my-orders/.../subscription-invoice/..."
      },
      "created_at": "2023-01-18T12:16:24.000000Z",
      "updated_at": "2023-01-18T12:16:24.000000Z",
      "test_mode": false
    },
    "relationships": {
      "store": {
        "links": {
          "related": "https://api.lemonsqueezy.com/v1/subscription-invoices/1/store",
          "self": "https://api.lemonsqueezy.com/v1/subscription-invoices/1/relationships/store"
        }
      },
      "subscription": {
        "links": {
          "related": "https://api.lemonsqueezy.com/v1/subscription-invoices/1/subscription",
          "self": "https://api.lemonsqueezy.com/v1/subscription-invoices/1/relationships/subscription"
        }
      },
      "customer": {
        "links": {
          "related": "https://api.lemonsqueezy.com/v1/subscription-invoices/1/customer",
          "self": "https://api.lemonsqueezy.com/v1/subscription-invoices/1/relationships/customer"
        }
      }
    },
    "links": {
      "self": "https://api.lemonsqueezy.com/v1/subscription-invoices/1"
    }
  }
}