Will Brady

You can also specify attributes by prefixing the hash key with "@".

client.call(:example, message: {
  someStuff: 123,
  someAuthStuff: {
    "username" => "abc",
    "password" => "test123",
    "@xsi:type" => "n2:SpecialLogin",
    "@xmlns:n2" => "http://magiccompany.com/specialstuff"
  }
 }
})