How to escape or pass / in Http Task URL in flowable modeler?

Flowable Engine
1

I have to call a RabbitMQ API to publish some message to a queue in default Virtual Host namely " / " which can be encoded as %2F but the same is not working in flowable-modeler and giving 405 Method Not Allowed.

URL :

http://localhost:15672/api/exchanges/%2F/amq.default/publish

Payload :

{
  "properties": {

  },
  "routing_key": "test_queue",
  "payload": "Some message",
  "payload_encoding": "string"
}