{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfe4d5978a3077d49536d1310f35b9d7fbc8ab30fce7b8b224b0f14ad19f3b525",
    "signature": "0x46f94e99808760d4b605e2e32a45793e4eaba1e4eeaa720e1f4c29c0f8cf0dca15ce8a78ccdff7d8bf1058b801c7ada814592f4db6707ffaff2f57d4c347d2991c",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}