Extrinsic 40488-1

{
  "heartbeat": {
    "blockNumber": 40487,
    "sessionIndex": 674,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x9ef638280c2f3b2a2f1034e60924bf5c73d7e1f644998aa1bfc579c701cb245c20749f4d12445b60be887dfdb973d5d10b7f972c2b7d078f9e3380bb2876508e"
}