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

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.



Payload :

  "properties": {

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