EnforceExclusiveAccess/IExclusiveAccessLock changes since 6.7.0

[jababda]

Hi All,

I'm upgrading our rebus instance from 6.7.0 to 8.4.2 to make use of the open telemetry extensions but have hit a bit of a wall.
We use a custom IExclusiveAccessLock implementation that uses MSSQL to create and store the locks, but with the changes in 7.0.0 to the payload parameter in AquireLockAsync from

{ "SagaDataType": "TypeX", "CorrelationPropertyName": "TypeX.PropY", "CorrelationPropertyValue": "Value" }

to

sagalock_<int> our custom implementation has obviously stopped working.

Does anyone have any guidance on how to use the new payload to ensure correct exclusive locking?