{
  "$schema": "http://json-schema.org/draft-07/schema",
  "type": "array",
  "items": {
    "type": "object",
    "additionalProperties": false,
    "properties": {
      "id": {
        "type": "number"
      },
      "name": {
        "type": "string"
      },
      "amount": {
        "type": "number"
      },
      "comment": {
        "type": "string"
      },
      "timestamp": {
        "type": "number"
      }
    },
    "required": [
      "id",
      "name",
      "amount",
      "timestamp"
    ]
  },
  "default": []
}