Extrinsic 28365-1

{
  "heartbeat": {
    "blockNumber": 28363,
    "sessionIndex": 472,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x6e23697c366fb806a8778e1d2bbb1a93cacb386f984db659401a54baa66fd00ae93db4d26c4a99721a4e98d512cc94dccb0fe1bc0f26f018d8bf45d0abdb1586"
}