Extrinsic 55468-1

{
  "heartbeat": {
    "blockNumber": 55467,
    "sessionIndex": 924,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3a5334c3bc9a82bba932627da8c75cccf4f0f7c84bf4f3194086d7deea11da1e933702131e3513899602deea00b3877f1aece0e576a3f875a8dfeda0b0d74587"
}