To begin receiving feed messages, you must first send a subscribe message to the server indicating which channels and products to receive.
Make sure that you subscribed successfully by verifying the response's type field.
identifier
must be a string, not a json object.
Authentication
It is possible to authenticate yourself when subscribing to the websocket feed.
To authenticate, you send a subscribe message as usual, but you also provide request with the headers just as if you were signing a request to GET /auth/feed.
To get the necessary headers, you would go through the same process as you do to make authenticated calls to the API.
// request
{
"command": "subscribe",
"identifier": "{\"channel\":\"ChannelName\", \"market\":\"MARKET-NAME\"}"
}
// response
{
"type": "confirm_subscription",
"identifier": "{\"channel\":\"ChannelName\", \"market\":\"MARKET-NAME\"}"
}