Extrinsic 19234-1

{
  "heartbeat": {
    "blockNumber": 19232,
    "sessionIndex": 320,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x3e133d91dccebd1dde436a414c13b0e328de5b91f1b4bb3a8649c4b69f748a06f83cb2f21be6095da3242ad7d877a15a6f4e6cbfc7525d0ae1e3aa46e26f678e"
}