{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "715",
    "entityType": "User",
    "nonce": "0x2714d97885a6ce2b0b3283acbb5d22bb51b902c49c65454c961571774f5b6f5a",
    "signature": "0x30cb76ded5f0beeb895c60a1e4ea5f0455ec2d7975797dbb2d67fed27535015b1fe148c91b28329f7e0d3da32cd4529ff12668d947674c0040dac119735b508a1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}