Extrinsic 88522-1

{
  "heartbeat": {
    "blockNumber": 88521,
    "sessionIndex": 1475,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x104287eba9f2011b290684004aa56afc03b1e4d1e2d95826d785878009fa9e33833284ac98c1e36dc0483b4c8056f40e966012952f5bf279fc28f7e8dea68181"
}