Extrinsic 174272-1

{
  "heartbeat": {
    "blockNumber": 174270,
    "sessionIndex": 2904,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x600193d45d2dabd4c663c9ab6406780c95f8889942ddc6ca327e9d610dc65524dd6c1ddd7a7de88f17eeaa8365306af4648e66560993c932f22bf3becea18289"
}