Executing Post with Json

public IEnumerator Post(string url, System.Object dataObject, Action<UnityWebRequest> callback)
{
    string postData = JsonConvert.SerializeObject(dataObject);
    byte[] bodyRaw = GetBytes(postData);

    var request = new UnityWebRequest(url, "POST");
    request.uploadHandler = (UploadHandler) new UploadHandlerRaw(bodyRaw);
    request.downloadHandler = (DownloadHandler) new DownloadHandlerBuffer();
    request.SetRequestHeader("Content-Type", "application/json");
    request.SetRequestHeader("X-HTTP-Method-Override", "POST");
    yield return request.SendWebRequest();
    
    Debug.Log("Status Code: " + request.responseCode);
    
    if (request.isNetworkError)
    {
        Debug.Log(request.error);
    }
    else
    {
        Debug.Log(request.downloadHandler.text);
    }
    callback?.Invoke(request);
}