import CodeBlock from "@theme/CodeBlock";
import data_message from "!!raw-loader!./../../../../../bindings/nodejs/examples/08_data_message.js";

You can use the [MessageBuilder.data(data: Uint8Array)](./../libraries/wasm/api_reference#messagebuilderdatadata--codemessagebuildercode) function
function to attach data to a message.

<CodeBlock className="language-javascript">{data_message}</CodeBlock>

**Output example**:

```json
{
  "message": {
    "networkId": "14379272398717627559",
    "parentMessageIds": [
      "1a383abbe5f6a6b0899d718975c3119643aa784a68d04075f4e986fd7a0c0e4b",
      "6098f889e31911833df7b7839e8b222d701ab496f7dfa1a719087edf4fa7ae52",
      "a98b47db4e8254eccc738c968bd35b08a5491e56d6c1a18af298c42bbd8c3a46",
      "da6796c0842c08de832c7948fffedc0d5adce372e50a108f26a128dba6096d31"
    ],
    "payload": {
      "type": 2,
      "index": "494f54412e52532042494e44494e47202d204e4f44452e4a53",
      "data": "736f6d65207574662062617365642064617461"
    },
    "nonce": "13835058055282176519"
  },
  "messageId": "10f59c101cec669b0a0ba163bc777184c7f63455f5e771d42f910a1ba2ad20ff"
}
```