{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753303354",
    "entityType": "User",
    "nonce": "0x2a966c5b61a309df161bc59b780b891db6b81479e92441e9b92ed978363f3ddd",
    "signature": "0xbca42471ff12c9b4192dd289956f65e505fe0aa7ad4773ac930358a6344a9892315336e89caa7c2377a4802f4984f12438061c667f852bc9db45502a52c0317d1b",
    "signer": "0x94f65cd55640695e7f7251A1e47A6461EA6F4a90",
    "userId": "289459232"
  }
}