Extrinsic 31533-1

{
  "heartbeat": {
    "blockNumber": 31531,
    "sessionIndex": 525,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x1ab7bd3f61f172c5863176efbeba99a648d7a86d7220050683aad471473d3762f4977b64876417b323e5c7385833ff75329082b69ef3c643f4e3a8fda5fdda83"
}