Extrinsic 6346-1

{
  "heartbeat": {
    "blockNumber": 6344,
    "sessionIndex": 105,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x4c3069ba16a072c05caa8d09a816b0614ac6a5cdc1ab83e5955e959868fec068094ab18bf75793808ddc5ffb82446e846d02a69f1fc3ce47577a10f9901ce789"
}