Extrinsic 131320-1

{
  "heartbeat": {
    "blockNumber": 131319,
    "sessionIndex": 2188,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x366c623e368a37c096064a21c20d8edd9899d1c58173274885045119b752404c5e7f7c522e6d9038b3f429cc18ee94b006636471b9e6cbe3901ea47ddade5b83"
}