"<String of size 64 containing lowercase hex characters.>"

{
  "Enum": [
    {
      "ParseParams": []
    },
    {
      "LogFull": []
    },
    {
      "LogMalformed": []
    },
    {
      "OnlyAccount": []
    },
    {
      "AlreadyRegistered": []
    }
  ]
}

None

"<String of size 64 containing lowercase hex characters.>"

{
  "Enum": [
    {
      "ParseParams": []
    },
    {
      "LogFull": []
    },
    {
      "LogMalformed": []
    },
    {
      "OnlyAccount": []
    },
    {
      "AlreadyRegistered": []
    }
  ]
}

{
  "Enum": [
    {
      "None": []
    },
    {
      "Some": [
        {
          "file_hash": "<String of size 64 containing lowercase hex characters.>",
          "timestamp": "<Timestamp (e.g. `2000-01-01T12:00:00Z`)>",
          "witness": "<AccountAddress>"
        }
      ]
    }
  ]
}