{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99357c75a24fe0180239d78025ec40f3668d5d147b02f33caebec6176e8ce3d6",
    "signature": "0x08e960aabd4f9a038e56f7aa908e310c41a786a2f6fe0c7a97e9aba5500251f039e09136831a04fa7b2c88216aaa9f3f22982b866337f0d9142712d8217d895c1c",
    "signer": "0x7A4d69fD043239352142140B3861d9A9a89731Cc",
    "userId": "363053902"
  }
}