{
    "step": "waitunit_new",
    "invoice": {
        "date": {
            "day": "",
            "month": "",
            "year": ""
        },
        "number": "",
        "seller": {
            "name": "",
            "econ_code": "",
            "phone": "",
            "address": ""
        },
        "buyer": {
            "name": "",
            "econ_code": "",
            "phone": "",
            "address": ""
        },
        "tax": "",
        "discount": "",
        "discount_type": "percent",
        "notes": "",
        "items": []
    },
    "new_item": {
        "desc": "استراک ریپسر بات",
        "qty": 1,
        "unit": "",
        "price": 0
    },
    "screen_message_id": 11901
}