Extrinsic 48641-1

{
  "heartbeat": {
    "blockNumber": 48639,
    "sessionIndex": 810,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x0e97be017d165d1ac27d14ec8b18fbe84fd264e974aa4c51c176411c78de9a7d53ec636efdd3b3c71c594798889f6ed7a4d32b46c4dc99704b14d1776818fc87"
}