Extrinsic 37533-1

{
  "heartbeat": {
    "blockNumber": 37531,
    "sessionIndex": 625,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x704775813d7c26ccd9ed5634ef817599c83fe8266f2d606217dd6aa39f8952685b7e57578e085488aa149efb7bf11841555048b4a5206de7347934ce42512a84"
}