{

"token": "verification-token",
"team_id": "T1DD3JH3K",
"api_app_id": "A7449NRUL",
"event": {
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  "scopes": [
    "files:read",
    "files:write",
    "chat:write"
  ],
  "trigger_id": "241582872337.47445629121.string"
},
"type": "event_callback",
"authed_teams": [

],
"event_id": "Ev74V2J98E",
"event_time": 1505519097

}