Extrinsic 2326-1

{
  "heartbeat": {
    "blockNumber": 2325,
    "sessionIndex": 38,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x46b032d89b487f26082e63a56b072751469ba30c02c8c5b91a9fe6347a51ac676118847a53637b14db26892aab4aae9f166444f793905f6f01c399c30e3ec287"
}