{
    "order_id": "-10",
    "product1": {
        "product_type": "material",
        "material_id": 0,
        "quantity": ""
    },
    "product2":   {
        "product_type": "material",
        "material_id": 100,
        "quantity": 10,
        "warehouse_id": -100
    },
    "product3": {
        "product_type": "service",
        "name": "Very Long Name"
    },
    "product4": {
        "product_type": "wrongtype",
        "name": "Wrongtype"
    },
    "product5": "Some Wrong Data",
    "users": "not an array"
}