# MemoryMessageData.Payload

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.providers.memorymessagedata/) | [Fields](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.providers.memorymessagedata/fields/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/MemoryStreams/MemoryMessageData.cs)

```csharp
[Orleans.Id(4)]
public ArraySegment<byte> Payload
```

The serialized event data.