context_actions_icon_button.json

{
  "type": "context_actions",
  "block_id": "fake_block_id",
  "elements": [
    {
      "type": "icon_button",
      "icon": "trash",
      "text": {
        "type": "plain_text",
        "text": "Delete"
      },
      "action_id": "delete_button",
      "value": "delete_item"
    }
  ]
}