Extrinsic 10345-1

{
  "heartbeat": {
    "blockNumber": 10343,
    "sessionIndex": 172,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x0c2d1bb577be8f835fb7f4ff75d71095093cd8bef7b9015caa01eab251733715d0a9748edb934241b849105dbb1a6137f07ca0625ef2948b760eb5b1c20fe38b"
}