> ## Documentation Index
> Fetch the complete documentation index at: https://docs.notional.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Active Asset Data

## Subscribe

```json theme={null}
{
  "method": "subscribe",
  "subscription": {
    "type": "activeAssetData",
    "user": "0x742d35cc6634c0532925a3b844bc9e7595f0beb",
    "coin": "BTC"
  }
}
```

## Response

```json theme={null}
{
  "channel": "activeAssetData",
  "data": {
    "user": "0x742d35cc6634c0532925a3b844bc9e7595f0beb",
    "coin": "BTC",
    "leverage": 5
  }
}
```

## Notes

<Note>
  * Both `user` and `coin` are required for subscribe and unsubscribe messages. - The server sends
    an initial snapshot immediately after a successful subscription. - Subsequent messages are emitted
    when the user's leverage changes for that market. - The server normalizes `user` to lowercase and
    `coin` to uppercase in responses.
</Note>