Extrinsic 178608-1

{
  "heartbeat": {
    "blockNumber": 178607,
    "sessionIndex": 2976,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xb8aac860097eb7f55b77ab251bafe61978840750ed46b5a0c204700f95305053af1dd45172eb79ce74b2de302fc751c64424ef7d8eafe107acbb84bf5b8a9488"
}