{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb394400abaaac3d0eee359f2caf4d9f23fc61d52203e615ad756cf88c58400bd",
    "signature": "0x51d6bfb0f41be229d9b89eb589e5bdc2c0e2dc90c2ea0c74ab1355b4ef06278b005b0d8d846714ed9605168880412adfe7ae83eda1a75a373fb87cfa53f0fadf1c",
    "signer": "0xFD0beF65a229259540bbE6c53591dD0fE97a4Edf",
    "userId": "656574401"
  }
}