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{
    "items": [
        {
            "price": "string",
            "unit_price": 0,
            "quantity": 0
        }
    ],
    "discounts": [
        {
            "code": "string"
        }
    ],
    "collection_method": "string",
    "days_until_due": 0,
    "payment_method": "string",
    "invoice_settings": {
        "invoice_document_id": "string",
        "invoice_cost_center": "string"
    },
    "invoice_retentions": {
        "reteica": "string",
        "retefte": "string"
    },
    "payment_settings": null
}