Extrinsic 44489-1

{
  "heartbeat": {
    "blockNumber": 44487,
    "sessionIndex": 741,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x984e99a25d3d1106b64320406c11ff053f5e6fd5b839d137f064cefa1f4ba518cc73effbcae5a0145e5806c7b979276c69fa455c1dceb5806cd9c2fde8c69a82"
}