Extrinsic 189489-1

{
  "heartbeat": {
    "blockNumber": 189487,
    "sessionIndex": 3158,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xee5b690a00b0e7b8d8cb98629080e431be304a2f4164a1a25b1f104ec26c5868c34276b9fc89ede99a2d61f7137cff79c3349377f738659f927af2b27145af80"
}