Extrinsic 17191-1

{
  "heartbeat": {
    "blockNumber": 17190,
    "sessionIndex": 286,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x1e40e319374d7ff0cf3a5c1db918f77c7d771c2e73751967564d36a47e09e33d0c2e2a78f5d659c621af063da4c159b4256b515abd2e4cc64a41c4a1486f5c87"
}