Extrinsic 71311-1

{
  "heartbeat": {
    "blockNumber": 71310,
    "sessionIndex": 1188,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xaaa1ba8bf1448da011f2a2caf6a121ba2085847bd91f31a80447aad8cc58dd43100382eeb69babfb69c0d9eaa4869a378cabdc3c7b4cf913eced01fc5207db85"
}