Extrinsic 8089-1

{
  "heartbeat": {
    "blockNumber": 8087,
    "sessionIndex": 134,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x1a5b14edf5a33d3bfb02b21df84fd731ca83104bcd55a63bc1342ab019087b31b1bb989699ea4696d13218df1a0be111239980e34b5ee8a9c8eab211a96c328f"
}