JSFiddle - React, Tailwind, and code Playground

JavaScript

var string = '{"text": "Olha "eu" aqui"}';
var conteudo = string.match(/{"text": "(.*)"}/)[1];
console.log(conteudo)
string = string.replace(conteudo, conteudo.replace(/"/g, '\''));
console.log(string);

var json = JSON.parse(string);
console.log(json);