Service endpoint are subject to change
Return the requested asset providing the unique identifier of the asset.
The id of the unit card to be retrieved. This must be in string format compliant with ObjectId format.
An ObjectId is a 12-byte unique identifier consisting of:
A 4-byte value representing the seconds since the Unix epoch, a 5-byte random value, a 3-byte counter, starting with a random value.
Returns a General Card object.