ChangedIsClaimingOpen (address admin, bool oldIsClaimingOpen, bool isClaimingOpen)
[topic 0]:0x4e44a6aa1967ab1dc59fc5ba899181a6cc539fcd4b8b85fff65ed7add452ad47
0x000000000000000000000000a8c251b83e77a833f722bb61105ae156668194d600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001