Extrinsic 155290-1

{
  "heartbeat": {
    "blockNumber": 155289,
    "sessionIndex": 2588,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xf2afde8c26e025602c6997dfb3c68772cc7a669ac08920f50964f9fc8db50724dd3009e942d30d07d40aaeaa6c98546c89edb2e042034b14a88ba270ca7d2e87"
}