Calling APIs is always going to be non-interactive and that's how they are meant to be. If you want an interactive session of selecting Workflow, then entering parameter values as when prompted, you need to build some application which calls the API to get workflows, reads the required parameters and prompts user to input them. WFA plans to provide CLI execution of workflow in future with the product.
Attached is a powershell script that does it for you. But its not using WFA Rest APIs, instead SOAP apis. Original script credit to Mirko. I'm yet to make a REST version, but will post it soon.
All you need is to modify the $username, $password, $wfaserver at the top of the script according to your setup and then execute it.
You'll be presented with a list of available workflows,
select the one you want,
you will be prompted with the parameters to enter.
Job execution will be tracked.
Execution of workflow is done.
If this post resolved your issue, help others by selecting ACCEPT AS SOLUTION or adding a KUDO.