Extrinsic 15934-1

{
  "heartbeat": {
    "blockNumber": 15933,
    "sessionIndex": 265,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xba8fbec8e33c03d4b86358723f2c7341776f7b981754769bed9491cd8067775116c5617d27154c1057ce1e40ca7c54947af5a48ee0558f43ae1e53c633eba38e"
}