# Understanding messages in the data-channel folder for Amazon Chime SDK media capture pipelines
<a name="data-channel"></a>

The data-channel folder contains data messages in the .txt format, and each message is a JSON object. Messages are visible with all configurations options. File names contain the *yyyy-mm-dd-hour-min-seconds-milleseconds* timestamp. This example shows the data fields in a message.

```
{
    "Timestamp": "string", 
    "Topic": "string", 
    "Data": "string", 
    "SenderAttendeeId": "string"
}
```