Extrinsic 6431-1

{
  "heartbeat": {
    "blockNumber": 6429,
    "sessionIndex": 107,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xaace4e7a63922748d744a58b78e5dcc6ed63e1ff066f2af0d31afed2a446c128199efdd040b4bbbbf701029120a12c9bb5b551c92a74bec132c170371da4df84"
}