[
 {
  "order_id": "S1",
  "customer": "Acme Corp",
  "discount": 15.0,
  "line_items": [
   {
    "qty": 3,
    "unit_price": 40.0
   },
   {
    "qty": 1,
    "unit_price": 9.99
   }
  ]
 },
 {
  "order_id": "S2",
  "customer": "acme corp",
  "line_items": [
   {
    "qty": 2,
    "unit_price": 25.5
   }
  ]
 },
 {
  "order_id": "S3",
  "customer": "Zenith Ltd",
  "discount": 5.0,
  "line_items": [
   {
    "qty": 10,
    "unit_price": 3.2
   }
  ]
 }
]