{
  "token": "verification-token-not-a-secret",
  "team_id": "TDEMO",
  "api_app_id": "ADEMO",
  "event_id": "Ev_APP_CONTEXT_CHANGED_001",
  "event_time": 1782770460,
  "type": "event_callback",
  "event": {
    "type": "app_context_changed",
    "user": "U_ALICE",
    "event_ts": "1782770460.000100",
    "context": {
      "entities": [
        {
          "type": "slack#/types/thread_ts",
          "value": "1782770400.000100",
          "team_id": "TDEMO"
        }
      ]
    }
  }
}