Extrinsic 157399-1

{
  "heartbeat": {
    "blockNumber": 157397,
    "sessionIndex": 2623,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3889709ee0889f58ea8af684713f1c0db53bc05a8d228bcd94cdd734016d8b1b4c07ac69a92fe673745966f229413491c7adcdd89232087411f215cbf2927688"
}