Extrinsic 43903-1

{
  "heartbeat": {
    "blockNumber": 43902,
    "sessionIndex": 731,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x94a860735fcd5f96d4fa970bf45d638bb4016a6710e023780e7729eaa52e050ddd4b1978cab471d391b94271514abba7f50ecb7e8ea1d239b793ec2e2509ea8e"
}