Extrinsic 120944-1

{
  "heartbeat": {
    "blockNumber": 120943,
    "sessionIndex": 2015,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb4dfaf7c98dc6a461dbbe396bfc232731b637275f7ae75a5afaf6b58e9c92e1404f98bb14dcf7cfa9ff80f96cfc0e3847bb79b75d9204f5d3c73cc43fb6a3988"
}