Extrinsic 30767-1

{
  "heartbeat": {
    "blockNumber": 30766,
    "sessionIndex": 512,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xdce8733d05e1ed8c58116ea8cb8f98442e2233367ac618681ec600c3e6513316dc806a3991d2bea4fb17503f6df009eb2782d6e175fe79ae9059e418b8c13484"
}