Extrinsic 30225-1

{
  "heartbeat": {
    "blockNumber": 30224,
    "sessionIndex": 503,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x48e7b0bb523eacbe9b76b84a553fd8137e2c350fec82571fca194cad2cc52d535814389dbfa5b8a09726a79c26cd13174a934b35d9b2338402536012340b2a88"
}