I am sending post request successfully and response status 201 but there is no response body. Also it doesn't exist in the API logs.
201: A resource was successfully created in response to a POST request. The Location header contains the URL pointing to the newly created resource.
It should be there in the logs in the account using which the API call was made (logs will be deleted after 6 hours)
Ya, there will be no body for 201 status, generally rest agent will follow the location header to get the data