Extrinsic 16406-1

{
  "heartbeat": {
    "blockNumber": 16405,
    "sessionIndex": 273,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xe8a19a6fc25f301d3673743219a9a8f0f8894598ae084af778743359876ce3706ef135c4ecc111c418327c41f615a52489ddc43171e0a4c704eff812e5567c88"
}