[FSSDK-11823] make Activate listener payload type backwards compatibl… #1318

Job	Run time
lint	1m 26s
lint_markdown_files / lint	1m 43s
unit_tests (18)	2m 4s
unit_tests (20)	1m 59s
unit_tests (24)	1m 47s
integration_tests / test	9s
unit_tests (22)	1m 58s
fullstack_production_suite / test	5s
Coveralls coverage	4s
	11m 15s

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