Extrinsic 31354-1

{
  "heartbeat": {
    "blockNumber": 31352,
    "sessionIndex": 522,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x6a555e6a5928cc8ad1118f9c0cd86cc09e2ce2b5770cc3b53f3499efab753e45dd1c28431b16f27b20055fa1e39f4498ad3f0a601281085c73c49c738ddb4b8d"
}