import.json

{
    "message": "spree:order:import",
    "payload": {
        "order": {
            "email": "test1@test.com",
            "line_items": [
                {
                    "price": 19.99,
                    "sku": "ABC-123",
                    "quantity": 1
                },
                {
                    "price": 23.99,
                    "sku": "DEF-123",
                    "quantity": 3
                }
            ],
            "shipping_address": {
                "firstname": "Chris",
                "lastname": "Mar",
                "address1": "112 Hula Lane",
                "address2": "",
                "city": "Leesburg",
                "zipcode": "20175",
                "phone": "555-555-1212",
                "company": "RubyLoco",
                "country": {
                    "id": 49,
                    "name": "Ireland",
                    "iso": "IE"
                },
                "state": {
                    "id": 49,
                    "name": "Maryland",
                    "abbr": "MD"
                }
            },
            "billing_address": {
                "firstname": "Chris",
                "lastname": "Mar",
                "address1": "112 Billing Lane",
                "address2": "",
                "city": "Leesburg",
                "zipcode": "20175",
                "phone": "555-555-1212",
                "company": "RubyLoco",
                "country": {
                    "id": 49,
                    "name": "Ireland",
                    "iso": "IE"
                },
                "state": {
                    "id": 49,
                    "name": "Maryland",
                    "abbr": "MD"
                }
            },
            "shipments": [
                {
                    "cost": 29.99,
                    "stock_location": {
                        "name": "PCH",
                        "id": 123
                    },
                    "shipping_method": {
                        "name": "UPS Next Day",
                        "id": 123
                    },
                    "items": [
                        {
                            "sku": "ABC-123",
                            "quantity": 1
                        },
                        {
                            "sku": "DEF-123",
                            "quantity": 3
                        }
                    ]
                }
            ]
        }
    }
}

"country_id" or "country_name"
"state_id" or "state_name"