How to accept input in workflow without API endpoint and pass it to custom activity

[kpatelghd]

Hey ,

I am using Elsa workflow to build workflows. I would really appreciate your help if you can help me with this. I build one custom Activity to send notification. That accepts some input and return result. Now, I want to call that Custom Activity in one workflow that do not have API end point. I am planning to execute that workflow by Definition Id. I finished everything but I am not able to receive the the Input in the Workflow from User.

Here you can see my workflow.

Here is the postman request and response I got.

I would really appreciate your help with this.

Thank you