curl --request POST \
  --url 'https://edi.stateset.com/v1/einvoice/ubl/{partner_id}' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "buyer_reference": "string",
  "currency": "string",
  "customer": {
    "city": "string",
    "country": "string",
    "endpoint_id": "string",
    "endpoint_scheme": "string",
    "name": "string",
    "postal_code": "string",
    "street": [
      "string"
    ],
    "vat_id": "string"
  },
  "due_date": "string",
  "invoice_number": "string",
  "issue_date": "string",
  "lines": [
    {
      "description": "string",
      "quantity": "string",
      "unit_price": "string",
      "uom": "string"
    }
  ],
  "supplier": {
    "city": "string",
    "country": "string",
    "endpoint_id": "string",
    "endpoint_scheme": "string",
    "name": "string",
    "postal_code": "string",
    "street": [
      "string"
    ],
    "vat_id": "string"
  },
  "tax_percent": "string"
}'