{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/User",
  "title": "User",
  "type": "object",
  "description": "The user details for the notification subscriber.",
  "properties": {
    "userId": {
      "type": "string",
      "description": "The unique identifier for the user."
    },
    "username": {
      "type": "string",
      "description": "The username associated with the user."
    }
  }
}