//convert unicode to string
// using a variable
let unicodeString = "httpu00253Au00252Fu00252Fexample.comu{1F4A9}x61";
console.log(decodeURIComponent(JSON.parse('"' + unicodeString.replace(/"/g, '"') + '"')));
// direct approach
console.log(decodeURIComponent(JSON.parse('"httpu00253Au00252Fu00252Fexample.comu{1F4A9}x61"')));