Extrinsic 2313-1

{
  "heartbeat": {
    "blockNumber": 2311,
    "sessionIndex": 38,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x92fe4fc52eea7d092542bdcddb583e44f7069815b22ce8dedb9d82d1e3a72729ca8e9673e67547dfd753f4b30139ec3d39c311296fcb9386c058fa75abe78b89"
}