{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "203753098",
    "entityType": "User",
    "nonce": "0x513926a65a39faf855e8ce2fef7bb725d57b06c38d69761dae098546b17eab40",
    "signature": "0x21f93c09d81c237c7d4f7679732af2dbe33943616ca7dd59ef3c9a1dc9e8c71131de501024bb217aa4f78af0e854921351dbb01b45f3cd220a644fca16e8fa1e1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}