{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x81a6839e3847917f40f5534428c40aa6c12bf0249b250f2d7f4e2abd4495166a",
    "signature": "0x246eecbb3eb6bab33c9a893ae0c340d12f75bfbc62571b682b3d9ad87aa4fa21614a304f75770bc548c80648ccaaca3af87a0bac4cab4bccfb1f4397b9f7476f1b",
    "signer": "0xA9b07396C6621Ef0A65965bD61de72FdBebf6102",
    "userId": "39933200"
  }
}