Get Signer of the current connected account
This returns the signer object of the current connected account.
avnSdk.signer();
All API utils also work in offline mode.
Example Output
{
sign: [Function: sign],
address: '5EYzWhGxbogEfwNKL52ZRDCgBxu4t8oWDFAsXXVYvH6dMQTo',
}