invoice

{
    "id": "string",
    "billingAccountId": "string",
    "type": "standard",
    "invoiceNumber": "string",
    "taxIgstAmount": 0,
    "taxCgstAmount": 0,
    "taxSgstAmount": 0,
    "taxAmount": 0,
    "totalAmount": 0,
    "paidAmount": 0,
    "currency": "string",
    "status": "draft",
    "dueDate": "2019-08-24T14:15:22.123Z",
    "issuedAt": "2019-08-24T14:15:22.123Z",
    "itemCount": 0,
    "items": [
        {
            "id": "string",
            "description": "string",
            "amount": 0,
            "currency": "string",
            "quantity": 0,
            "hsnCode": "string",
            "sacCode": "string",
            "unitPrice": 0,
            "unit": "string",
            "unitTax": 0,
            "unitTaxAmount": 0,
            "taxType": "overseas",
            "taxIgstRate": 0,
            "taxCgstRate": 0,
            "taxSgstRate": 0,
            "taxIgstAmount": 0,
            "taxCgstAmount": 0,
            "taxSgstAmount": 0,
            "taxAmount": 0,
            "totalAmount": 0
        }
    ],
    "note": "string",
    "metadata": null,
    "createdAt": "2019-08-24T14:15:22.123Z",
    "updatedAt": "2019-08-24T14:15:22.123Z"
}