Extrinsic 19841-1

{
  "heartbeat": {
    "blockNumber": 19840,
    "sessionIndex": 330,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x0e4e3d737250733817cca0356ad8d73fb0cb87c07cad6aabc4be634b45e83d7544dc2aaf2d643863a75830861fe494bd80b56a8af266372a03643a32a95db585"
}