Extrinsic 55590-1

{
  "heartbeat": {
    "blockNumber": 55589,
    "sessionIndex": 926,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xa6ae269465790c6cd109642bbc82ed24ede8d3cb09226fb90bdbf315f5a1141ca9c7c27d2355ce9c58dd1284760915e0c35a42e7b96bf0c807d445a6058e2b8a"
}