Extrinsic 39277-1

{
  "heartbeat": {
    "blockNumber": 39275,
    "sessionIndex": 654,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xb6ff02565595fe7b29152603df7282069fa5a719edce656411248c4507e3bb1d23c9840ae5fde800f19ee879dc9b66aa616ecd68266875e2d0eb39e7c8a4aa89"
}