Extrinsic 19062-1

{
  "heartbeat": {
    "blockNumber": 19061,
    "sessionIndex": 317,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x0a5f8639b437692d8f778b514e6eae8958ef1d39ec499bb034c111b1c8673e4b637156f13e6394692616001d3fadc91cb3f380ff38cdc7e142a44b4d5e65a88a"
}