Extrinsic 6168-1

{
  "heartbeat": {
    "blockNumber": 6167,
    "sessionIndex": 102,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x96f859d31c07c51ccbc30345d2ec20e4571efec87f3ce53a6d68adc0e549e210db0390de5cda4960e5054866a94e89d81e0e96be37e641e68cd8cc9c9f093e8b"
}