{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38aab1e58ba1577328a27deffa22147da41c0c7c7218675de29355ce9214e350",
    "signature": "0x3d41ccbf541c6ee2939bf07fcde742eade278d49f3df2c98274b1943d045249e36277c7787340aa9b702a1e47acc8709f35774d8b04a66ca5689d5483ce4f3a31b",
    "signer": "0xE1F369B8fF59A502D20c16E0C175b6884c03182d",
    "userId": "768100404"
  }
}