Convert a list of valid event IDs from input format (variable-length list
of UUID strings) to snark signal format (fixed-length list of bigint
strings). The result always has length VALID_EVENT_IDS_MAX_LEN with
unused fields are filled in with a value of BABY_JUB_NEGATIVE_ONE.
Convert a list of valid event IDs from input format (variable-length list of UUID strings) to snark signal format (fixed-length list of bigint strings). The result always has length VALID_EVENT_IDS_MAX_LEN with unused fields are filled in with a value of BABY_JUB_NEGATIVE_ONE.