Extrinsic 399040-1

{
  "heartbeat": {
    "blockNumber": 399039,
    "sessionIndex": 6650,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa28218fb905ea3800d0d1cef639e6cf4670e1237a3c689adc4cabd5049a20033df4cdde417bd6fee3a4c55674a527a559ecbda0d1e3de37ec7b518f35064aa89"
}