title: How do i see id of the user who uses my slack app
body: <p>basically want a simple app, that the user installs on the workspace. <a href="https://i.stack.imgur.com/ZleU1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZleU1.png" alt="app ui" /></a></p>
  <p>I want to access the Id of the user who presses Run</p>
  <p>I am using slacks's beta platform that uses deno.</p>