Is there a way to see the actual documentation / specs for the github object we can access when setting up workflows? I tried to echo github.event for instance but that just prints object…

My end goal is to have a workflow run only on PR merges or manual triggers, so I have the following configuration:

on:
  workflow_dispatch:
  pull_request:
    types: [closed]

and in my job, I do indeed need to check if the PR is merged

my-run:
    runs-on: [ubuntu-latest]
    if: ${{ github.event.pull_request.merged }}
    # more steps

but that means that if I trigger a manual workflow, the if clause prevents it from ever running… How can tell my if that I also want to run on workflow_dispatch? I tried to add || github.event.workflow_dispatch in there but that just doesn’t do anything… And because I can’t find exactly what is included in github.event, I don’t know what to try.

So my question is two-fold:

• Where can I find detailed docs for all of the github.event objects & their sub-objects?
• How can I have a workflow run on either a merged pr or a manual workflow_dispatch?

For reference, I did read through https://docs.github.com/en/free-pro-team@latest/actions/reference/context-and-expression-syntax-for-github-actions#github-context but that only covers some of the docs

UPDATE
So searching around I managed to find a way to echo any object by using toJson(<object>). But for workflow_dispatch I couldn’t find any relevant information 😕