Update an existing order

{  
  "status"?: OrderStatus,
  "shipping_updates"?: OrderShipping,
  "items"?: OrderItem,
  "refunded_amount"?: number,
  "notes"?: string | null,
  "tags"?: string[],
  "custom_properties"?: object | null
}

{
  "source_order_id": string,
  "status": OrderStatus,
  "created_at": string,
  "updated_at": string,
  "caller_app": string | null,
  "currency_code": string,
  "order_subtotal": number,
  "order_discount": number,
  "order_tax": number,
  "shipping_total": number,
  "order_total": number,
  "refunded_amount": number,
  "customer": OrderCustomer,
  "ship_from": Address,
  "ship_to": Address,
  "billing_address": Address | null,
  "items": OrderItem[],
  "shipping_rate": OrderShipping[],
  "tax_request_id": string | null,
  "usd_conversion_rate": number | null,
  "notes": string | null,
  "tags": string[],
  "custom_properties": object | null
}