{
  "action": "subscribe-public",
  "module": "trading",
  "path": "orderbook-limited/{market_code}/{limit}"
}

{
  "topic": "trading/orderbook-limited/game-pln/10",
  "message": {
    "changes": [
      {
        "marketCode": "GAME-PLN",
        "entryType": "Buy",
        "rate": "10",
        "action": "update",
        "state": {
          "ra": "10",
          "ca": "6",
          "sa": "6",
          "pa": "6",
          "co": 2
        }
      }
    ],
    "timestamp": "1563280204658"
  },
  "timestamp": "1563280204658",
  "seqNo": 5
}

{
  "requestId": "78539fe0-e9b0-4e4e-8c86-70b36aa93d4f",
  "action": "proxy",
  "module": "trading",
  "path": "orderbook-limited/{market_code}/{limit}"
}

{
  "requestId": "78539fe0-e9b0-4e4e-8c86-70b36aa93d4f",
  "statusCode": 200,
  "body": {
    "status": "Ok",
    "sell": [
      {
        "ra": "39500",
        "ca": "0.55345108",
        "sa": "0.55345108",
        "pa": "0.55345108",
        "co": 1
      }
    ],
    "buy": [
      {
        "ra": "39256.01",
        "ca": "0.3468",
        "sa": "0.3468",
        "pa": "0.3468",
        "co": 1
      }
    ],
    "timestamp": "1566468343707",
    "seqNo": "1978936"
  }
}

📘
Implementation example
To keep the order of receiving pushes and data consistency should be implemented the following mechanism:

Connect to the channel and save every push on temporary list.

Get the current snapshot of previous connected channel and save whole response to the target structure.

Update structure with temporary list, starting with 1 value greater of seqNo than downloaded snapshot.

For each update - check if seqNo is 1 more greater than previous message and clear temporary list after each successful update on structure.

If temporary list will not be clearing it will be the fault of lost push and need to repeat the whole process from the beginning.

Values of the seqNo are individual for each limits: 10 / 50 / 100 and are consistent for snapshot and websocket channel.

Response details

Key	Type	Description
changes	array
mmarketCode	string	Symbol of the market.
entryType	string	Order type: buy / sell.
rate	decimal	Price of the order.
action	string	Type of change: remove / update. If update will occur you are going to get additional array of state.
state	array	Optional array for active orders.
ra	decimal	Price of the order.
ca	decimal	Current amount of cryptocurrency in the order.
sa	decimal	Starting amount of cryptocurrency in the order.
pa	decimal	Amount of cryptocurrency before the last change.
co	decimal	Amount of orders in the order.
timestamp	Unix Timestamp	Time of execute on server. For this time all above values are actual.