Invoice details

curl --request GET \
     --url 'https://www.zep-online.de/zepinstanz/next/api/v1/invoices/20240001' \
     --header 'Accept: application/json' \
     --header 'Authorization: Bearer {token}'

{
	"data": {
        "invoice_number": "20240001",
        "billing_kind": {
            "id": 0,
            "name": "Abrechnung"
        },
        "date": "2024-05-01",
        "amount": "285.21",
        "status": {
            "id": 0,
            "name": "Billed"
        },
        "currency": "EUR",
        "correction_date": null,
        "payment_terms_date": "2024-06-01",
        "payment_terms": 30,
        "address": "Musterfirma\r\nMusterstraße 1\r\n00000 Musterstadt",
        "email_sent_at": null,
        "email_recipient": null,
        "customer_number": "0815",
        "title": null,
        "type": null,
        "note": null,
        "created": "2024-05-02T05:52:20.000000Z",
        "modified": "2024-05-02T05:52:20.000000Z"
    }
}