{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308252159",
    "entityType": "User",
    "nonce": "0x7389ae46818a0cf07577ca1e4a7126dd176a628336a0664fcf8680eb9af24908",
    "signature": "0x25792a5c843184c6dd9b0bcedf44f0039123760c5e47019c99e2cda70984b6a45126b8153f6642834f2b123ffb33e518cc09baf7cec92a94fc75da66565686441c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}