question

In the response to any API call, if there's anything in the response, that will always be in the section "data", like so:

{
  "code": 200,
  "status": "OK",
  "data": {
    // response properties go here
  }
}

In the case of some API calls, like all the Get...Data ones, there's a specific property in the response named "Data" (ex: https://api.playfab.com/documentation/server/method/GetUserData). So the response for those will always have something like this:

{
  "code": 200,
  "status": "OK",
  "data": {
    "Data": {
      // contents of the property Data go here
    }
  }
}

Now, in Cloud Script, what you're specifically getting back is the contents of the "data" section of the response - not the whole response body with the code and status (in the case of errors, you get the complete body of the response back in the apiError).

If you're seeing anywhere there's an inconsistency in this, can you please provide specifics?