{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc51a10628c424b720f4b87a535b4ba213379f092124a80b23d3bfb3818cf0a4c",
    "signature": "0x18872d1460a5a0fbb926bc3b530cea6ac891dd725dafea9432bf76ce28bd76257f5e1154d2a73d579ca1f8c83bc9dc944fe2431def1d2e5e8e60005753df2b5f1c",
    "signer": "0x822744782B721382Faaa6c76100F848a141849c5",
    "userId": "439828432"
  }
}