{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599751364",
    "entityType": "User",
    "nonce": "0xb06a877de1a50f157246c920f3d62ea7dd616f4cc4058163802cc8a319087aae",
    "signature": "0xe7d87dabbb5263559302fa08cada7fc0f2a8394f9d93550992df2d71d2edcb5777cec6fd42c2e8160966d731d4afef90ef512fb4b6cf8cdcbfd2e72afa7d3b031b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}