Extrinsic 30375-1

{
  "heartbeat": {
    "blockNumber": 30373,
    "sessionIndex": 506,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x92c21dc40fa2216c91d919104867745bcdc6b1832fdc0e4ae08aa856f879b671f86dd0e689d3ce91f18261060652d3a306df01ca68db2cf9a7927d6ca2a28983"
}