Extrinsic 178301-1

{
  "heartbeat": {
    "blockNumber": 178299,
    "sessionIndex": 2971,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x6a9b31bd360f0d4f05a170aa93dc185ae0e5e6c56d986f1d90a79e24ffd0eb79358f206dcf6b8472d0bf7a0b9b14362b711a976071c9da0e6e61b3d47996828c"
}