Extrinsic 150285-1

{
  "heartbeat": {
    "blockNumber": 150284,
    "sessionIndex": 2504,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xba7e674411d50283d0c46c0daa2a0e16675cfa48237f8414b6baf304a572e35d5692a6d90b5e248799383f896fe7adb5ca00d9c4302d6e3f6fce4692c7511f88"
}