Extrinsic 55724-1

{
  "heartbeat": {
    "blockNumber": 55723,
    "sessionIndex": 928,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6a0bf0d634b80196283eb9d72fa53259c72ce8e1d0723b3c891521074ca43c34591e383a82460571edb6a3216addf33b98774c27886db45ed07e2e4ab8c5528d"
}