Extrinsic 14555-1

{
  "heartbeat": {
    "blockNumber": 14553,
    "sessionIndex": 242,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x4c553af966f26e1a5533e4468673751f4d3d8bdca7ee3bb65d921cb34445d517151d49c36121a3c7d2c11c0ed30a87bf791170d3d7bbd8daa99553b84c9aac8b"
}