{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15490",
    "entityType": "User",
    "nonce": "0xfea358d81aeb4616b85d472f9412f42b0add0678d9676af78838da793d0e8874",
    "signature": "0xa47daca2574f3d904ea53e0c69fa16418e991e3e40ba48514804739ac132574f6ee58d592be1abed22c6fdfffc04c943df225846b3575c3915089ea3e5308d9b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}