HTTP API Request with Node-RED

Application Development
1

Hello,
According to the documentation of the application manager api we should be getting output for this API ( GET /applications/{app_id}/devices/{dev_id}) if the input is of the form

{
  "app_id": "some-app-id",
  "dev_id": "some-dev-id"
}

I passed this as msg.payload to the HTTP request node (GET) from the url http://.thethings.network:8084, but I don’t receive a json object.