{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342455",
    "entityType": "User",
    "nonce": "0x9849e3a32d99258c699a92e0ec4d738a568865a701783ba8945cf1ab19dffedf",
    "signature": "0x9aa11f5bb91bd1c3a2182296e84fc4f020e2b1c3af3a6bc784f89cd90b27721f79e3b01443d6fd83728c9da8a7ac756d1e6ad66e97683b2b319a4a21eb7e5e2b1c",
    "signer": "0x85f9d440b61768a3EcC7D5bD2307a38caf322BED",
    "userId": "242102384"
  }
}