CouponExpiration (index_topic_1uint256 epoch, uint256 couponsExpired, uint256 lessRedeemable, uint256 lessDebt, uint256 newBonded)
[topic 0]:0x753df65b37159bf237ae1fca97ba1bd57cf83bc9498f271a514a4d7bafe87bda
[topic 1]:0x000000000000000000000000000000000000000000000000000000000000000b
0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000