Extrinsic 48021-1

{
  "heartbeat": {
    "blockNumber": 48019,
    "sessionIndex": 800,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x0814de35b23c456d5e1858ed533a5ee4c396df6b3fcfcfbe1a775b1c731f4155a46541d87a7704af223e9b9bd5e1d3c7ed2aa545e470760192999d44a9c4338e"
}