array(24) {
  ["OrderItems"]=>
  array(2) {
    [0]=>
    array(4) {
      ["SKU"]=>
      string(14) "TEST-PRODUCT-1"
      ["Quantity"]=>
      int(1)
      ["UnitPrice"]=>
      int(10)
      ["UnitPriceVat"]=>
      int(2)
    }
    [1]=>
    array(4) {
      ["SKU"]=>
      string(14) "TEST-PRODUCT-2"
      ["Quantity"]=>
      int(333)
      ["UnitPrice"]=>
      int(20)
      ["UnitPriceVat"]=>
      int(4)
    }
  }
  ["OrderNumber"]=>
  string(15) "MY ORDER NUMBER"
  ["ExternalOrderReference"]=>
  string(23) "Additional Order Number"
  ["Title"]=>
  string(2) "MR"
  ["CompanyName"]=>
  string(15) "MY COMPANY NAME"
  ["FirstName"]=>
  string(10) "FIRST NAME"
  ["LastName"]=>
  string(9) "LAST NAME"
  ["Address1"]=>
  string(18) "First Line Address"
  ["Address2"]=>
  string(19) "Second Line Address"
  ["Address3"]=>
  string(18) "Third Line Address"
  ["Town"]=>
  string(12) "Town or City"
  ["County"]=>
  string(15) "County or State"
  ["PostCode"]=>
  string(19) "PostCode or ZipCode"
  ["Country"]=>
  string(2) "GB"
  ["Email"]=>
  string(12) "my@email.com"
  ["Phone"]=>
  string(11) "01245123456"
  ["Mobile"]=>
  string(11) "07979000000"
  ["CourierService"]=>
  string(8) "Next Day"
  ["Warehouse"]=>
  string(14) "Main Warehouse"
  ["Currency"]=>
  string(3) "GBP"
  ["Comments"]=>
  string(25) "Please pack in a safe box"
  ["DeliveryNotes"]=>
  string(16) "Delivery Message"
  ["GiftMessages"]=>
  string(12) "Gift Message"
  ["OrderValue"]=>
  int(12)
}

{"OrderItems":[{"SKU":"TEST-PRODUCT-1","Quantity":1,"UnitPrice":10,"UnitPriceVat":2},{"SKU":"TEST-PRODUCT-2","Quantity":333,"UnitPrice":20,"UnitPriceVat":4}],"OrderNumber":"MY ORDER NUMBER","ExternalOrderReference":"Additional Order Number","Title":"MR","CompanyName":"MY COMPANY NAME","FirstName":"FIRST NAME","LastName":"LAST NAME","Address1":"First Line Address","Address2":"Second Line Address","Address3":"Third Line Address","Town":"Town or City","County":"County or State","PostCode":"PostCode or ZipCode","Country":"GB","Email":"my@email.com","Phone":"01245123456","Mobile":"07979000000","CourierService":"Next Day","Warehouse":"Main Warehouse","Currency":"GBP","Comments":"Please pack in a safe box","DeliveryNotes":"Delivery Message","GiftMessages":"Gift Message","OrderValue":12}