signmessage.rb

    lnd = Lnrpc::Client.new({
      address: "127.0.0.1:10001",
      credentials_path: "/Users/ramon/.polar/networks/1/volumes/lnd/alice/tls.cert",
      macaroon_path: "/Users/ramon/.polar/networks/1/volumes/lnd/alice/data/chain/bitcoin/regtest/admin.macaroon",
    })

    # This works
    lnd.lightning.get_info

    response = lnd.signer.sign_message({
      msg: Lnrpc.to_byte_array("Hello, Jessica"), # assuming this is how it's encoded
      key_loc: {
        # https://github.com/lightningnetwork/lnd/blob/42099ef5e1e0f927290531fe2bff18406141567b/keychain/derivation.go#L85
        key_family: 6,
        # assuming idx is 0
        key_index: 0
      },
    })

    # This was generated via `lncli signmessage "Hello, Jessica"`
    # on the alice node`
    expected_signature = "d9aa91ggo54ouho9axcw3itokb5u697tigi1r8o1kq4qkx" \
      "87acduoz5f5wnxyts8dt8emhie9r3gnkxkwo5ogzo5xwsrfkhzpg5qnnmh"

    # How do I encode response.signature to show `expected_signature`?