curl --request GET \
  --url https://api.slash.com/invoice/settings \
  --header 'X-API-Key: <api-key>'

{
  "invoiceSettings": {
    "$entity": "invoice_settings",
    "id": "<string>",
    "legalEntityId": "<string>",
    "settings": {
      "companyName": "<string>",
      "email": "jsmith@example.com",
      "address": {
        "addressLine": "<string>",
        "addressCity": "<string>",
        "addressState": "<string>",
        "addressZip": "<string>",
        "addressLine2": "<string>",
        "addressCountry": "<string>"
      },
      "defaultMemo": "<string>",
      "logoDocumentId": "<string>",
      "unitPriceDecimalPlaces": 4,
      "branding": {
        "backgroundColor": "<string>",
        "titleColor": "<string>"
      }
    },
    "timestamp": "2023-11-07T05:31:56Z"
  }
}