Extrinsic 1781-1

{
  "heartbeat": {
    "blockNumber": 1779,
    "sessionIndex": 29,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x0ee28f571df18d5d9382295fb91bf7cb75fab9db9d30b2ccd49fc6e345da8366f4478c6a581d704f4000ae3cb98fc4b149efe8762256aa9b118829af37486f85"
}