Extrinsic 16955-1

{
  "heartbeat": {
    "blockNumber": 16954,
    "sessionIndex": 282,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x90c7ee32f767f59e11ca4efee2f14d65456dee84cca870c763c8880869779b40b05d4b7d7bfe19e9676a6221a9a105fe045bd035af2184e7a0a785ee35c89880"
}