Example response:

{
  "data": {
    "shipping_classes": [
      {
        "id": 1,
        "name": "Standard",
        "countries": [
          "US"
        ],
        "shipping_rates": [
          {
            "shipping_rate": {
              "shipping_group_id": 1,
              "first_item_in_cents": 450,
              "additional_item_in_cents": 150
            }
          }
        ]
      },
      {
        "id": 2,
        "name": "Everywhere Else",
        "countries": [

        ],
        "shipping_rates": [
          {
            "shipping_rate": {
              "shipping_group_id": 1,
              "first_item_in_cents": 750,
              "additional_item_in_cents": 500
            }
          }
        ]
      }
    ]
  },
  "meta": {
    "code": 200,
    "api_version": "1.0"
  }
}