Extrinsic 20364-1

{
  "heartbeat": {
    "blockNumber": 20362,
    "sessionIndex": 339,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xba0ea879b34c49e0cba53c8535addd1474ccf5578ffcb4e5c97f5aeffc8a6a4ae0e3dd66ba6a9eff8705f3830d10b7c7d46f11a557009305f9a2d2e1e4a10280"
}