:: JSON data can also be passed as a path to a .json file

oint slack SendEphemeralMessage ^
  --token "***" ^
  --channel "C06UFNUTKUL" ^
  --text "Ephemeral message" ^
  --user "U06UABH3APP" ^
  --blocks "{'type':'image','image_url':'https://hut.openintegrations.dev/test_data/picture.jpg','alt_text':'Image'}"