Extrinsic 17686-1

{
  "heartbeat": {
    "blockNumber": 17685,
    "sessionIndex": 294,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x7445f6f9742a5a2767aa36cb63519119f5247bed7e95190d00e8acbab878013aeecc0dffcf2baa3f468ef2fd5555d81c6aa220e5556778336f83a78d4ee2af8f"
}