Extrinsic 4304-1

{
  "heartbeat": {
    "blockNumber": 4302,
    "sessionIndex": 71,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xecc9c5df00bb388d8e9a114d43b942c3e324b1ad27e3edba51707abad0b9cb0c2bc85d34b0a203adf2cf92b29910340430ea855c2f2e4964fc5a501ae8eee781"
}