Extrinsic 22600-1

{
  "heartbeat": {
    "blockNumber": 22599,
    "sessionIndex": 376,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x76efdbb8ac5099001865e656fe4f0f4804902481c13a53202e02e789f7ef8764db869f3d533694e4808a40a9a74ee5ad6557dec70019326c891de146d81d6f81"
}