Extrinsic 28629-1

{
  "heartbeat": {
    "blockNumber": 28628,
    "sessionIndex": 477,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xbac8cd89faae62306142c3e10c20066fb1997af66671915a460d7237ad57aa5d605f4c1db972f79ec9b1b566d5b8c851efcba168a89273d2a6c438d4d758c283"
}