question

    void LaterStart()
    {
        string Keyname = "25.bin";
      UploadFileToCDN(Keyname);
    }

    public void UploadFileToCDN(string key, byte[] content, string contentType = "binary/octet-stream")
    {
        GetUploadUrl(key, contentType, presignedUrl =>
        {
           PutFile(presignedUrl, content,contentType);
        });
    }


    void GetUploadUrl(string key, string contentType, Action<string> onComplete)
    {
        PlayFabAdminAPI.GetContentUploadUrl(new GetContentUploadUrlRequest()
        {
            ContentType = contentType,
            Key = key
        }, result => onComplete(result.URL),
        error => Debug.LogError(error.GenerateErrorReport()));
    }    void PutFile(string presignedUrl, byte[] content, string contentType = "binary/octet-stream")
    {
        WWWForm form = new WWWForm();
        form.AddBinaryData("Data", content);


        UnityWebRequest www = UnityWebRequest.Post(presignedUrl, form);
        if (www.isNetworkError || www.isHttpError)
        {
            Debug.Log(www.error);
        }
        else
        {
            Debug.Log("Form upload complete!");
        }


    }