Extrinsic 87345-1

{
  "heartbeat": {
    "blockNumber": 87343,
    "sessionIndex": 1455,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x9ece9f5e1beee8b28369e3902450c76fa9b7f51f55a5feb4ba73cf7f691cd051d5923dd475aee396c0d65ccfafe9138ce53a2ac1a54900d76ef841cce802188e"
}