Azure Service Bus Queues have a maximum message size of 'slightly less than 256kB', see:
https://azure.microsoft.com/en-gb/documentation/articles/service-bus-quotas/
It is conceivable that a RemoteExecutionContext serialized representation containing a very large entity could be larger than this. How does CRM ensure that the BrokeredMessage posted by the Service Bus Plugin does not exceed this size; and when the contextual
data would exceed this size; what is its behaviour?