PUT Request JSON Exception on TRY CATCH VB.NET

Question

I'm trying to run an API on VB.net but it always goes to catch ex as Exception because it returns The Remote Server returned an error: (400) Bad Request. When I tried to run the API it on POSTMAN. The status is 400 Bad Request but the it has a response in JSON. How can I get JSON response on VB.Net using Try Catch?

Sample Code:

    Dim myRequest As HttpWebRequest
    Dim myResponse As HttpWebResponse = Nothing
    Dim myReader As StreamReader
    Dim address As Uri

    address = New Uri("https://test-api.com/test/transfers/10001/execute")
    myRequest = DirectCast(WebRequest.Create(address), HttpWebRequest)
    myRequest.Method = "PUT"
    myRequest.ContentType = "application/json"


try
        myResponse = DirectCast(myRequest.GetResponse(), HttpWebResponse)
        myReader = New StreamReader(myResponse.GetResponseStream())
catch ex As Exception
   MsgBox(ex.Message.ToString) 
'it goes here and returned The Remote Server returned an error: (400) Bad Request 
'i want to get the exception json response


End Try