ShipmentItem object

{
    "id": "string",
    "type": "shipment_item",
    "attributes": {
        "shipment_id": 0,
        "order_item_id": 0,
        "quantity": 0,
        "cost": "string",
        "order_item_name": "string",
        "serial_codes": [
            "string"
        ]
    },
    "relationships": [
        {
            "shipment_items": [
                "string"
            ]
        }
    ]
}