Extrinsic 27867-1

{
  "heartbeat": {
    "blockNumber": 27866,
    "sessionIndex": 464,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x4485d73d6816a1a2b4341d1fa60957a5e5cc3b2f20063c63b4d048f7e3611c5072ff6088c243303c5b67dbe71bffd9435387e489768976fafd3bfe81a433fd84"
}