Extrinsic 44444-1

{
  "heartbeat": {
    "blockNumber": 44443,
    "sessionIndex": 740,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x2cf24475a9d4b9e4b60c0b2ce6b2b337fd21e4c88b7da56b70086cf6d1455958a0badf7c0a65b000d870d71f0449a3ed351ee8c029eda2b1abddec43124c5788"
}