Can I make C# accept T[] instead of List<T>?

[Raildex]

I am generating byte arrays, and the schemas contain

data: [ubyte];

But the resulting (Object API) on the C# side is a List:

  [Newtonsoft.Json.JsonProperty("data")]
  public List<byte> Data { get; set; }

Is there a way to generate it accepting a byte[] instead?

The issue I am having specifically is that I store pixel data.
Generating a List out of my pixel byte arrays just doubles the required memory for this conversion.