{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313790",
    "entityType": "User",
    "nonce": "0x17e750ffe03376b8c03187d1c8d0583d0a4ad3c572c4fbff42847b552db4e7ad",
    "signature": "0xf08ee30e893087e2a0b8284b7c51d8f1b91173f39a334b64505f648eb6f522c7393c0f692b638541f5acb6c5863da30b2da6f946eb9cf4f7205d3c80c9873dfd1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}