order_id: 1002
customer {
  id: 43
  personal {
    first_name: "Bob"
    last_name: "Smith"
  }
}
items {
  product_id: "sku-101"
  quantity: 1
  cents: 4999
}
shipping_address {
  street: "Oak St"
  city: "San Francisco"
  zip: "94107"
}
metadata {
  key: "priority"
  value: 2
}