UTC milliseconds when a data is created in the health data store.
You don't need to set its value because it is assigned by the system when a new data is inserted.
It is different with START_TIME that indicates the start time for measurement.
UTC milliseconds when a data is updated.
You don't need to set its value. When a new data is inserted, it is assigned as the same value with
CREATE_TIME by the system.
Then it is replaced to the updated time by the system if existing health data is updated.
Custom info which is formatted with JSON and compressed data.
It is used to customize the predefined data type.
Otherwise, custom info can be retrieved from the saved data
if you know the custom property's JSON format already.