Extrinsic 171741-1

{
  "heartbeat": {
    "blockNumber": 171739,
    "sessionIndex": 2862,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x4a3303f51a2baf2b1a310522b0e5b01e680fbfc3c896adf7d59589bbbf6fb849a11cc264230767e72b6c7e4fa2cbc8899da7c2306eab444c0b118e8cafbdf280"
}