Extrinsic 28245-1

{
  "heartbeat": {
    "blockNumber": 28244,
    "sessionIndex": 470,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xdcba7192af7519bb514331d9dd6833ac35205924a447193858d7c1eb0fc723428319c18a64fe7a610e0b1631cfb4278ef90490baad46b25a4f68d3c9c57dad82"
}