{
  "type": "tool_progress",
  "tool_use_id": "toolu_123",
  "tool_name": "Bash",
  "parent_tool_use_id": null,
  "elapsed_time_seconds": 2.5,
  "task_id": "task_123",
  "uuid": "11111111-1111-4111-8111-111111111111",
  "session_id": "sess_123"
}