{
  "type": "object",
  "title": "NonFungibleTokenHistoryEventWithTxMetadata",
  "description": "Non-Fungible Token history event with transaction metadata",
  "required": ["event_index", "asset_event_type", "tx"],
  "additionalProperties": false,
  "properties": {
    "sender": {
      "type": "string",
      "nullable": true
    },
    "recipient": {
      "type": "string"
    },
    "event_index": {
      "type": "integer"
    },
    "asset_event_type": {
      "type": "string"
    },
    "tx": {
      "$ref": "../transactions/transaction.schema.json"
    }
  }
}