OrderEvent

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://opensea.io/schemas/OrderEvent",
  "title": "OrderEvent",
  "allOf": [
    {
      "$ref": "#/components/schemas/Event"
    },
    {
      "type": "object",
      "properties": {
        "event_type": {
          "type": "string"
        },
        "event_timestamp": {
          "type": "integer",
          "format": "int64"
        },
        "transaction": {
          "type": "string"
        },
        "order_hash": {
          "type": "string"
        },
        "protocol_address": {
          "type": "string"
        },
        "chain": {
          "type": "string"
        },
        "payment": {
          "$ref": "#/components/schemas/Payment"
        },
        "order_type": {
          "type": "string"
        },
        "start_date": {
          "type": "integer",
          "format": "int64"
        },
        "expiration_date": {
          "type": "integer",
          "format": "int64"
        },
        "asset": {
          "$ref": "#/components/schemas/Nft"
        },
        "quantity": {
          "type": "integer",
          "format": "int64"
        },
        "maker": {
          "type": "string"
        },
        "taker": {
          "type": "string"
        },
        "criteria": {
          "$ref": "#/components/schemas/Criteria"
        },
        "is_private_listing": {
          "type": "boolean"
        }
      }
    }
  ],
  "required": [
    "chain",
    "event_timestamp",
    "event_type",
    "is_private_listing",
    "maker",
    "order_type",
    "quantity"
  ]
}