Extrinsic 10302-1

{
  "heartbeat": {
    "blockNumber": 10300,
    "sessionIndex": 171,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xf8aa8690f0291089666857857c23e61657d3a2b1aac241b6986eef272d28d14c5e3c7ba65049891aca2847ec4a5ba3312584de96e79cafe53fd63bc9fe9f9d8a"
}