Javascript "arraybytes" format in Delphi

I'm receiving a JSON response from an API with the following format:

{"type": "Buffer","data": [23, 23, 23, 23, 23]}

In NodeJS, decoding this is simple. Here's the code:

const response = await Api.get("endpoint", {  params: {    param1: value,    param2: value,  },  responseType: "arraybuffer",  headers: {    Authorization: bearer,  },});

The response will have the decoded content I need.

In Delphi, I am using the native RESTClient to extract data from the API. The raw binary data didn't fit my expectations. Here's an example of the code I tried to extract the ByteArray from the JSON:

for i := 0 to DataArray.Count - 1 dobegin  JSONValue := DataArray.Items[i];  if JSONValue is TJSONNumber then  begin    ByteValue := StrToIntDef(TJSONNumber(JSONValue).ToString, 0) and $FF;    ByteArray[i] := ByteValue;  end;end;

I tried converting the ByteArray in different encodings, but none of them worked as expected:

    //UTF-8:    TEncoding.UTF8.GetString(ByteArray)//This raised an exception.    //ISO-8859-1:    TEncoding.GetEncoding(28591).GetString(ByteArray)//This resulted in incorrect content.    //Windows-1252:    TEncoding.GetEncoding(1252).GetString(ByteArray)//This also resulted in incorrect content.  

What I Want:

The content I am trying to extract is ZPL (Zebra Programming Language).

If you need more code or details to reproduce the issue, feel free to let me know, and I can share it.