curl -X GET 'https://api.airbridge.io/dataspec/v1/apps/{app_name}/retention-report/events' \
  -H 'Accept-Language: ko' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer {AIRBRIDGE-API-TOKEN}'

{
  "data": [
    {
      "name": "Return Event",
      "events": [
        {
          "subGroup": "Any Event",
          "key": "any_event",
          "name": "Any Event (App)",
          "description": "All occurred events from users who performed a Start Event within a specified period"
        },
        {
          "subGroup": "App Standard Event",
          "key": "app_install",
          "name": "Install (App)",
          "description": "Install events from users who performed a Start Event within a specified period"
        }
      ]
    },
    {
      "name": "Start Event",
      "events": [
        {
          "subGroup": "",
          "key": "app_installs",
          "name": "Install (App)",
          "description": "Users who Installed within a specified period (Unique Install"
        },
        {
          "subGroup": "",
          "key": "app_deeplink_opens",
          "name": "Deeplink Open (App)",
          "description": "Users who opened App via Deeplink within a specified period (Unique Deeplink Open)"
        }
      ]
    }
  ]
}

{
  "type": "about:blank",
  "title": "Not Found",
  "status": 404,
  "traceId": "1-000000-000000000000000"
}