{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340637",
    "entityType": "User",
    "nonce": "0xced282d7bcbe13b6bfb470c8823cfcc9259a16004f09379fcc83b177878f1d57",
    "signature": "0xe6c247b2548d5241dfb4e505816b2238c682b79bd138b790ef67e7dd1341f3ba56e576d87091ba3963077bab3facc1f5cc648a0c6aa24d31bea39aa5673ed4a21c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}