Get key value from JSON that start with two braces

How can I get the value of final_balance in this JSON

{"1B22no5SKBuVRX3esHpgze5kAK5SzsA3B9":{"final_balance":1505100,"n_tx":1,"total_received":1505100}}  

I tried a lot but still can't access to that key.

let url = 'https://blockchain.info/balance?active=1B22no5SKBuVRX3esHpgze5kAK5SzsA3B9&cors=true';    fetch(url)  .then(res => res.json())  .then((out) => {    console.log('Checkout this JSON! ', out.final_balance);  })  

Appreciate any help!

https://stackoverflow.com/questions/66791395/get-key-value-from-json-that-start-with-two-braces March 25, 2021 at 08:33AM