Extrinsic 27679-1

{
  "heartbeat": {
    "blockNumber": 27677,
    "sessionIndex": 461,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x1285852d494965573cea28f23be89ac8c8642f964ba622074fe588d17174c323c2e6eb23a6771a004fe2d0948df16fbe38734649a8d458f89bb097e57324c885"
}