message: Allow empty value on event attributes
diff: @@ -101,7 +101,7 @@ interface RpcAttribute {
  function decodeAttribute(attribute: RpcAttribute): responses.Attribute {
  return {
  key: fromBase64(assertNotEmpty(attribute.key)),
  - value: fromBase64(assertNotEmpty(attribute.value)),
  + value: fromBase64(optional(attribute.value, "")),
  };
  }
  