{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "270855",
    "entityType": "User",
    "nonce": "0x567b9bdc6e7e1d7287f5995f1b9aa50edcf4574a57969ef87f0e4b900da90798",
    "signature": "0x1c2240afd72b6e20dc47adb45406bba30e512aa646109f3d142c8302ec10de4137745cb8963a423d598c9aca14781621f493cf27f667bb9acbca8127659dcbde1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}