Extrinsic 12408-1

{
  "heartbeat": {
    "blockNumber": 12407,
    "sessionIndex": 206,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x56d97d03b269d0ff98784191e1a4daee30e49a2d2bf3168fe076624bfe8aca525fa6e27af2896607a77413bde7b3a89abe2474f3400418e7f0e1fac4ddad9e85"
}