Extrinsic 16752-1

{
  "heartbeat": {
    "blockNumber": 16751,
    "sessionIndex": 279,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xce04e4729257ea62394ced8a599280f172bbcf9ec4b84c79cfd779d4203a6e00d06c05d628ade9c76765e80dcd586fe372da65f44eb9ca231ac2a99f74639682"
}