Extrinsic 123347-1

{
  "heartbeat": {
    "blockNumber": 123345,
    "sessionIndex": 2055,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xb0f48483bc34d7f14dea19230d6efb0d958dfe560a958e126bf2aea16e6060711871a9929e131dc2a7baedae9e7b757f0defb91342b48ccdda9eb6f11e088683"
}