Extrinsic 53250-1

{
  "heartbeat": {
    "blockNumber": 53249,
    "sessionIndex": 887,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x344567c7e92635e573d8bce85081e2db261c7f8b965272ae55eed6f2e2ab75622b2dcb88530c5801b46d9f9acadcb5b77c9336fa46f8a3b163ced791d33eeb80"
}