Extrinsic 148338-1

{
  "heartbeat": {
    "blockNumber": 148337,
    "sessionIndex": 2472,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x4acd6fc6254c09b500ca47f43fd05313b857817502522e5a365d588fae2fdd5bca61496b2780b02f74f8e7dcc06526f907198be8278cc2bd870febc81ba2c585"
}