Dynamic Data Sources in Power BI Service

Hi all,

I am working with a dynamic data source and the Power BI Service does not support refresh of a dynamic data source. However, I've seen a couple of posts where fetching data with Web.Contents has worked in PBI Service. 

Is there any way I can modify my query to get it to work? If not, are there any alternatives/work-arounds for this issue?

Here is the query:

= let
Result = Json.Document(Web.Contents(
"URL",
[
Headers = [#"Content-Type" = "application/json", #"Method" = "POST", #"User-Agent" = "Mozilla/5.0"],
Content = Json.FromValue([ #"parameter" = "value"])
]
))
in
Result

Any help is highly appreciated.

Thanks!