{
  "token": "verification-token-not-a-secret",
  "team_id": "TDEMO",
  "api_app_id": "ADEMO",
  "event_id": "Ev_DEMO_001",
  "event_time": 1782770400,
  "type": "event_callback",
  "event": {
    "type": "app_mention",
    "user": "U_ALICE",
    "text": "<@UBOT> please use channel context and draft an exec summary",
    "ts": "1782770400.000100",
    "channel": "C_EXEC",
    "event_ts": "1782770400.000100"
  }
}