Extrinsic 393510-1

{
  "heartbeat": {
    "blockNumber": 393509,
    "sessionIndex": 6558,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xbc13753ad67a9320e0e16294e6890869f3cc87898e566cfae845ee32c3bd4a4405e636355750995cae6aaf3dfeb849c962738138deedfa29be8e9082c8f52c8b"
}