curl --request GET \
  --url https://production.trackstarhq.com/wms/shipping-methods/{shipping_method_id} \
  --header 'x-trackstar-access-token: <x-trackstar-access-token>' \
  --header 'x-trackstar-api-key: <x-trackstar-api-key>'

{
  "data": {
    "id": "shipping_method_id",
    "created_date": "2022-01-01T00:00:00Z",
    "updated_date": "2022-01-02T05:05:05Z",
    "name": "Priority Overnight",
    "carrier_id": "fedex",
    "carrier_name": "FedEx",
    "scac": "FDXG",
    "additional_fields": {
      "key": "value"
    },
    "trackstar_created_date": "2023-11-07T05:31:56Z",
    "trackstar_updated_date": "2023-11-07T05:31:56Z"
  }
}