changeNotificationCollection

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/microsoft.graph.changeNotificationCollection",
  "title": "changeNotificationCollection",
  "required": [
    "@odata.type"
  ],
  "type": "object",
  "properties": {
    "validationTokens": {
      "type": "array",
      "items": {
        "type": "string",
        "nullable": true
      },
      "description": "Contains an array of JSON web tokens (JWT) generated by Microsoft Graph for the application to validate the origin of the notifications. Microsoft Graph generates a single token for each distinct app and tenant pair for an item if it exists in the value array. Keep in mind that notifications can contain a mix of items for various apps and tenants that subscribed using the same notification URL. Only provided for change notifications with resource data. Optional."
    },
    "value": {
      "type": "array",
      "items": {
        "$ref": "#/components/schemas/microsoft.graph.changeNotification"
      },
      "description": "The set of notifications being sent to the notification URL. Required."
    },
    "@odata.type": {
      "type": "string"
    }
  }
}