curl -X POST 'https://generativelanguage.googleapis.com/v1beta/webhooks' \
-H 'Content-Type: application/json' \
-d '{
  "name": "string",
  "uri": "string",
  "subscribed_events": [
    "string"
  ],
  "create_time": "string",
  "update_time": "string",
  "signing_secrets": [
    {
      "truncated_secret": "string",
      "expire_time": "string"
    }
  ],
  "state": "enabled",
  "new_signing_secret": "string",
  "id": "string"
}'