Task is a set of data in JSON written in key/ value pairs ("key":"value").
The maximum task size limit - 128 KB.
The example of task in process:
1 - task ID (a unique value in the entire system)
2 - task reference (a unique value in the current process)
3 - date and time when the task was created
4 - date and time when the task was changed
5 - JSON object which contains current task parameters