eosdotatest1

{
  "name": "taskhash",
  "base": "",
  "fields": [
    {
      "name": "user_random_hash",
      "type": "checksum256"
    },
    {
      "name": "user_data",
      "type": "string"
    },
    {
      "name": "server_random_hash",
      "type": "checksum256"
    },
    {
      "name": "nonce",
      "type": "uint64"
    }
  ]
}