documents.json

{
    "Stock_in_entry":{
        "id":1,
        "date": "",
        "nonunique_products":[
            {
                "item_id":1,
                "units":2,
                "unit_price": 200
            }
        ],
        "unique_products":[
            {
                "item_id":2,
                "serial_no":123, 
                "price": 300
            }
        ]
    },
    "Srock_out_entry":{
        "id":1,
        "date":"",
        "customer_id":2,
        "nonunique_products":[
            {
                "item_id":1,
                "units":2,
                "unit_price": 200
            }
        ],
        "unique_products":[
            {
                "item_id":2,
                "serial_no":123,
                "price": 300
            }
        ]
    },
    "Rent_agrement":{
        "id":1,
        "date":"",
        "customer_id":2,
        "nonunique_products":[
            {
                "item_id":1,
                "units":2,
                "unit_rent_price": 200,
                "rent_period_days":7,
                "rent_start_date":""
            }
        ],
        "unique_products":[
            {
                "item_id":2,
                "serial_no":123,
                "rent_price": 200,
                "rent_period_days":7,
                "rent_start_date":""
            }
        ]
    }
}