{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299920",
    "entityType": "User",
    "nonce": "0x0018ddbbe0d6af3ccdc6619980af757637f81eca977893e83a9a7b21453d6c61",
    "signature": "0x522dd625ec44e6382914f8382626cba8e601d639ab9f5f13dc15378093801317213795e1f5e02db0c9d9952d14c0c2383fcddaf443df885f2f696bb2af51816f1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}