Com Exchange Trading Snapshot Payload Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/blockchain/refs/heads/main/json-structure/com-exchange-trading-snapshot-payload-structure.json",
  "name": "ExchangeTradingSnapshotPayload",
  "description": "ExchangeTradingSnapshotPayload schema from Blockchain.com WebSocket APIs",
  "type": "object",
  "properties": {
    "seqnum": {
      "type": "int32"
    },
    "event": {
      "type": "string",
      "const": "snapshot"
    },
    "channel": {
      "type": "string",
      "const": "trading"
    },
    "orders": {
      "type": "array",
      "items": {
        "type": "object",
        "description": "Order / execution-report payload using FIX 4.2 field names. Returned in trading channel\nsnapshots and updates.\n",
        "properties": {
          "orderID": {
            "type": "string",
            "description": "FIX 37 \u2014 unique order id assigned by the exchange."
          },
          "clOrdID": {
            "type": "string",
            "description": "FIX 11 \u2014 client-supplied order reference."
          },
          "symbol": {
            "type": "string",
            "description": "FIX 55"
          },
          "side": {
            "type": "string",
            "enum": [
              "buy",
              "sell"
            ],
            "description": "FIX 54"
          },
          "ordType": {
            "type": "string",
            "enum": [
              "market",
              "limit",
              "stop",
              "stopLimit"
            ],
            "description": "FIX 40"
          },
          "orderQty": {
            "type": "double",
            "description": "FIX 38"
          },
          "leavesQty": {
            "type": "double",
            "description": "FIX 151 \u2014 remaining quantity open for execution."
          },
          "cumQty": {
            "type": "double",
            "description": "FIX 14 \u2014 filled quantity so far."
          },
          "avgPx": {
            "type": "double",
            "description": "FIX 6 \u2014 volume-weighted average price of fills."
          },
          "ordStatus": {
            "type": "string",
            "enum": [
              "pending",
              "open",
              "rejected",
              "cancelled",
              "filled",
              "partial",
              "expired"
            ],
            "description": "FIX 39"
          },
          "timeInForce": {
            "type": "string",
            "enum": [
              "GTC",
              "GTD",
              "IOC",
              "FOK"
            ],
            "description": "FIX 59"
          },
          "text": {
            "type": "string",
            "description": "Free-form server status text."
          },
          "execType": {
            "type": "string",
            "description": "FIX 150 \u2014 \"0\" New, \"4\" Canceled, \"8\" Rejected, \"C\" Expired, \"F\" Partial fill,\n\"A\" Pending, \"H\" Trade Break, \"I\" Order Status.\n"
          },
          "execID": {
            "type": "string",
            "description": "FIX 17 \u2014 unique id for this execution."
          },
          "transactTime": {
            "type": "string",
            "description": "FIX 60"
          },
          "msgType": {
            "oneOf": [
              {
                "type": "string"
              },
              {
                "type": "int32"
              }
            ],
            "description": "FIX 35 \u2014 \"8\" ExecutionReport, \"9\" OrderCancelRejected."
          },
          "lastPx": {
            "type": "double",
            "description": "FIX 31 \u2014 price of last fill."
          },
          "lastShares": {
            "type": "double",
            "description": "FIX 32 \u2014 quantity of last fill."
          },
          "tradeId": {
            "type": "string",
            "description": "FIX 1003/1004 \u2014 id of the trade / fill."
          },
          "price": {
            "type": "double",
            "description": "FIX 44"
          },
          "stopPx": {
            "type": "double",
            "description": "FIX 99"
          },
          "expireDate": {
            "type": "int32",
            "description": "FIX 432 \u2014 YYYYMMDD for GTD orders."
          },
          "minQty": {
            "type": "double",
            "description": "FIX 110"
          },
          "fee": {
            "type": "double"
          }
        }
      }
    }
  },
  "required": [
    "seqnum",
    "event",
    "channel",
    "orders"
  ]
}