Extrinsic 28175-1

{
  "heartbeat": {
    "blockNumber": 28174,
    "sessionIndex": 469,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x14fe133a404e71ec4bc8c666f326b13ffaba3a7aa46e93c8b577bdff1da4734b35c1e1c3bcd908b2b8de24b9b0f809f2529d48bb43156a2240aeeba6a2ad4a8b"
}