Extrinsic 37720-1

{
  "heartbeat": {
    "blockNumber": 37719,
    "sessionIndex": 628,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x0631c92d8b8e7e4c52619ced34354583d8144973e11b2e64be350f57107fc81be6727701e2a6460cdf7873f2d146bcfb41b35e37a8bf4268f648bb8e33bd8589"
}