Signals Notebook: How can we pass parameters in Http Get Submit method of External Actions

While configuring External Actions in Signals Notebook, “_eid” is the default Parameter Name and Entity ID is the parameter (Here Experiment ID as the External Action is applied to Experiment)

So, the request will be https:// api.example.com /?_eid=experiment:16260483-e5cf-43e6-b312-7c37308213e7

If you change “Parameter Name” to “test”, then the request will be  https://api.example.com/?test=experiment:16260483-e5cf-43e6-b312-7c37308213e7

Other parameters can be directly added to the URL field. E.g.:  https://api.example.com?param=p1

You can read more about this under Admin Guide > External Actions