JSFiddle - React, Tailwind, and code Playground

JavaScript

let jsonObject = {
  "augmentedReality": {
    "enabled": false,
    "augmentedRealitySettings" : [
      {
        "assetId": 7
      }
    ]
  }
}


var json = isAssetId(jsonObject);

console.log(json);

function isAssetId(jsonObject) {

for (let key in jsonObject) {

  if (typeof jsonObject[key] === "object") {

    jsonObject[key] =  this.isAssetId(jsonObject[key]);

  } else {
   
    if(key=='assetId'){
      jsonObject[key]=3;

    }} }

return jsonObject;

}