{
  "$schema": "https://json-structure.org/draft/2020-12/schema",
  "name": "Notification",
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "source": {
      "type": "string"
    },
    "message": {
      "type": "string"
    },
    "sequenceNumber": {
      "type": "integer"
    },
    "timestamp": {
      "type": "integer"
    },
    "userData": {
      "type": "object"
    }
  }
}