EIP712 signatures:
(cpy373_1) oberstet@intel-nuci7:~/scm/crossbario/autobahn-js/test/xbr$ node test_typed.js
Using private key: 0xa4985a2ed93107886e9a1f12c7b8e2e351cc1d26c42f3aab7f220f3a7d08fda6
Account canonical address: 0x3F979903ACBd194cA450DC956df17A6dF392ec08
Ok, signed typed data using 0x3F979903ACBd194cA450DC956df17A6dF392ec08
SIGNATURE = 0x84cb6534d5b9a3b2e5eeb5420ce45bd62380f04d5e08f64f3b9d44b1b3f2aedc56fd6c5eee942d1e490960988c1c9c4b2c082836e1d79d062eb88ad18a4eb62f1c
Ok, verified signature was signed by 0x3F979903ACBd194cA450DC956df17A6dF392ec08