Extrinsic 28413-1

{
  "heartbeat": {
    "blockNumber": 28411,
    "sessionIndex": 473,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x4c5465b1a811eb8160742465115213814365e397c2f5dd9d79b1c872745fd50ca104fd9f6afced74a4128c912e0df3ddc9b3c505cb9cd40221fb242dfdfb588a"
}