hass-config/.storage/application_credentials

{
  "version": 1,
  "minor_version": 1,
  "key": "application_credentials",
  "data": {
    "items": [
      {
        "domain": "google",
        "client_id": "5026230886-uggo9394sevkvmbrosu1402tg14edarp.apps.googleusercontent.com",
        "client_secret": "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",
        "name": "Adris Calendar",
        "id": "google_5026230886_uggo9394sevkvmbrosu1402tg14edarp_apps_googleusercontent_com"
      },
      {
        "domain": "google_assistant_sdk",
        "client_id": "387565593241-2f8kmpq8ivtu8o4ueo0qnfhaiargmfv9.apps.googleusercontent.com",
        "client_secret": "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",
        "name": "hass-google-assistant-sdk",
        "id": "google_assistant_sdk_387565593241_2f8kmpq8ivtu8o4ueo0qnfhaiargmfv9_apps_googleusercontent_com"
      },
      {
        "id": "spotify_cc122b45a09d4d379ef16a1e73044f20",
        "domain": "spotify",
        "client_id": "cc122b45a09d4d379ef16a1e73044f20",
        "client_secret": "ce06db3f2fdb49d3aaf98c5e8d8a2f5a",
        "name": "Adri"
      }
    ]
  }
}