Extrinsic 27469-1

{
  "heartbeat": {
    "blockNumber": 27467,
    "sessionIndex": 457,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x6afb33281a99b64e6c42f8da1bb21e71cc9e277423d8a64dec63b1c2f631c37c09d9e5243690b3eb3d67cdd0dcd6f4e68b1e15e62142006c402b087e3560e48d"
}