{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2fc80fd950edcb19af58243a16735aae24b14dddc88a89c60ba376b2e2b6eb09",
    "signature": "0x165f415886d55a16fe18819e889f0d6136b4e7d86e8acbe8875e96eaca776570189121f6fca2a96410a9364bb6907e8beaf24ef9b9086ca30a5953843d60a8d11c",
    "signer": "0xC9504D9Df8901BB52887649826E71A94112Ee623",
    "userId": "212989995"
  }
}