Extrinsic 17369-1

{
  "heartbeat": {
    "blockNumber": 17368,
    "sessionIndex": 289,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x10439f30d00985539c32ea14aa0b177367d5afb88b824968fbc2e1fd7763716d743a47ac3f53b1f8775b95899d45c1b878d331ad55939bc48cfe483bb1821386"
}