SubscriptionResponse - Kraken Developers

Answers a SubscriptionRequest. subscriptionResult says whether it was accepted. Direction: Kraken → client

ID	Field	Type	Encoding	Presence
1	`sessionId`	`SessionId`	field	required
2	`subscriptionId`	`uint64`	field	required
3	`serverTimestampNs`	`TimestampNs`	field	required
4	`subscriptionResult`	`SubscriptionResult`	field	required
5	`reason`	`VarStringEncoding`	var data	required

Every message is preceded by the standard SBE messageHeader (blockLength, templateId, schemaId, version). See encodings.