Jmeter how to set test Invalid Json

I testing back end app - authorisation customers by key in JMeter. I want to set in JMeter test case - send empty JSON.

My module have a following error code: 10010 Authorisation error 10200 Authorisation error 10300 Authorisation error

nvalidJSON; webSocket request-response Sampler Request data:

{}

JSON Asserttion: Assert JSON Path exist: $.outlet

Expected value:

The question is - how I can set expected value the test to pass? what set this test in JMeter?