Signature for this request is not valid

im testing the binance api but cant get over the signature problem can u spot a mistake on my signature?:

   const crypted = CryptoJs.HmacSHA256("timestamp=" + new Date().getTime().toString() + "&recvWindow=5000" , this.APISECRET).toString();

I am just taking a wild guess, your signature needs to be encoded correctly. You can see some examples in this ask.