{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x8827b661dccbfd8b5168a3738aee6fe7ed9c77315a60d8c5eb2dc55799a6f5db",
    "signature": "0x029710e7165c5da1745a6e6bc0230ccaa3f55e5480ad520d91e07b58532153b44bce385f3d4442e751b4186f54f66d14a85683ebe5c8dc2655e1a75dddce54221c",
    "signer": "0x18e80443A33c763307bac21D4Ec54B381DFC58cA",
    "userId": "964025330"
  }
}