OperatorRegisteredToNetwork (address operator, uint256 shares)
[topic 0]:0x16c1a2a8195923d655fe84191b37c746f4385a5c32c038578958b29f52daa1a8
0x0000000000000000000000007d3b0d0d3883a2eee68fcc0d242e945dd6eef6bb000000000000000000000000000000000000000000000000b5b8746e84ac7227