{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/flow-blockchain/main/json-schema/event.json",
  "title": "Event",
  "description": "A Flow blockchain event emitted during transaction or block execution.",
  "type": "object",
  "required": ["type", "transaction_id", "transaction_index", "event_index", "payload"],
  "properties": {
    "type": {
      "description": "The qualified event type identifier.",
      "type": "string"
    },
    "transaction_id": {
      "description": "A 32-byte unique identifier for an entity.",
      "type": "string",
      "format": "hexadecimal",
      "pattern": "[a-fA-F0-9]{64}"
    },
    "transaction_index": {
      "type": "string",
      "format": "uint64"
    },
    "event_index": {
      "type": "string",
      "format": "uint64"
    },
    "payload": {
      "type": "string",
      "format": "byte",
      "description": "Base64-encoded event payload in JSON-Cadence interchange format."
    }
  }
}