Extrinsic 1417-1

{
  "heartbeat": {
    "blockNumber": 1416,
    "sessionIndex": 23,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x8c2beed2e47b7f7ab333cf0a847cf7c5385d0215ba07ee8b0a0eb544eb3025354e5bef5c0b7634920a8349c8ece2322fdd42f494183a43dd8245748705285d87"
}