Extrinsic 16063-1

{
  "heartbeat": {
    "blockNumber": 16062,
    "sessionIndex": 267,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x68390afebcc4c61d3edb946d1d9e2c0d075a660a8ae0125e2023c8bc0403e73d057defa86a161cfc892347bbc0759d30493223a3b137fe2a6fad26b57edbd281"
}