Search results by Group is not working

I'm using the Rest API to pull search results from the Community, I wanted to get the results from a specific group,

see the following parameters that I am using.

{
"Query": "q=my search string"
}

Please help me to get filtered results.

Thanks in Advance.

curl --location --request GET 'http://mycommunity.com/api.ashx/v2/search.json?PageSize=100&PageIndex=0&Query=q=test&Filters=type::group:20'
[edited by: Aravind Eriventy at 2:18 PM (GMT 0) on Thu, Jan 14 2021]