JSFiddle - React, Tailwind, and code Playground

JavaScript

var result = [
  {
    "sItem" : [
      "Pizza Margherita","Pizza marinara"
    ],
    "sImage" : [
      "https://assets.marthastewart.com/styles/wmax-300/d31/pizza-margherita-0606-mla102155/pizza-margherita-0606-mla102155_vert.jpg","https://www.silviocicchi.com/pizzachef/wp-content/uploads/2015/02/m-evid-672x372.jpg","https://assets.marthastewart.com/styles/wmax-300/d31/pizza-margherita-0606-mla102155/pizza-margherita-0606-mla102155_vert.jpg","https://www.silviocicchi.com/pizzachef/wp-content/uploads/2015/02/ddddd-evid-672x372.jpg"
    ],
    "nQuantity" : 1,
    "eDeliveryStatus" : "n",
    "nPrice" : 215,
    "sReceiptId" : "pRjZpGzIDPpX",
  }
];

var converted = [];
result.forEach(function(i){
	converted.push({
  
  "title": i.sItem[0],
  "subtitle": i.sItem[0],
  "quantity": i.nQuantity,
  "price": i.nPrice,
  "currency": "INR",
  "image_url": i.sImage[0]

  });
})

console.log(converted);