Extrinsic 55889-1

{
  "heartbeat": {
    "blockNumber": 55888,
    "sessionIndex": 931,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xf2c9dfb706dcdd5a0c51260543402cac74687babde45359ca2bad2d196ac83693fcc6eb200e601490fb48917ce0ac3013b61a1b43bf39f78a5ca246953bfb381"
}