{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338569",
    "entityType": "User",
    "nonce": "0x51ba9355e4970bb8563b121d10eb3deb4bf8eb94552819430937f8b180cf00ff",
    "signature": "0xbaa7e80d0ebfcd5bb30110cffe2ee71752378a666b09f67e8e384d7d36fa306d17012734f62f2540a2e9012ce74c4ad8a14b1625d41b9f93fffdb872bf04b9361c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}