Extrinsic 174547-1

{
  "heartbeat": {
    "blockNumber": 174546,
    "sessionIndex": 2909,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xf8ee86f805a62d5c17f7e5550ceeb41106c69af990b664e75a3dcf83b943cd589fa68629abad11653e461eb30439406c427dff27b90ecdcd51e41f188a0ad780"
}