Extrinsic 173847-1

{
  "heartbeat": {
    "blockNumber": 173846,
    "sessionIndex": 2897,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x10cee7bb08a9c13069238eaacf872c79da40532e73415b96a8ebde51c32b7d02815e6414b8b5927f302dba0cf534815089146345e7a0d22d81379be9afda938a"
}