curl --request GET \
  --url https://api.oplog.one/openapi/v1/Returns/{returnNo} \
  --header 'Authorization: <api-key>'

{
  "lineItems": [
    {
      "lineItemReferenceNumber": "<string>",
      "sku": "<string>",
      "processedAt": "2023-11-07T05:31:56Z",
      "state": "WaitingToBeProcessed",
      "damagedState": "WaitingInWarehouse",
      "serialNumber": "<string>"
    }
  ],
  "source": "Oplog",
  "returnReferenceNumber": "<string>",
  "salesOrderChannel": "<string>",
  "salesOrderReferenceNumber": "<string>",
  "notes": "<string>",
  "state": "ReturnCreated",
  "trackingId": "<string>",
  "cargoCarrier": "<string>",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "arrivedToWarehouseAt": "2023-11-07T05:31:56Z",
  "completedAt": "2023-11-07T05:31:56Z",
  "courierRequest": "No"
}