curl --request GET \
  --url https://api.interchange.io/api/v2/storefront/billing/pending-invoice-items \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "description": "<string>",
      "currency": "<string>",
      "amount": 0,
      "quantity": 0,
      "unitAmount": 0,
      "date": 0,
      "period": {
        "start": 0,
        "end": 0
      },
      "proration": true,
      "customerId": "<string>"
    }
  ],
  "meta": {
    "count": 0,
    "limit": 0,
    "hasMore": true,
    "cursor": "<string>"
  }
}