Extrinsic 40789-1

{
  "heartbeat": {
    "blockNumber": 40787,
    "sessionIndex": 679,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xd89fadc652aaf646c2e09b3d80be474e48a6eafd0c69d0c5fe928c687454dd22fde658f2490b2070182918a508059fbf59c34134235b972dc7f81d72494d828d"
}