{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfe44eaf55bebab52d862cc383a0b3f61582415e4afb9d62b8e0e6acb0648a489",
    "signature": "0x1ac307c025aca87c847aec9031b4793b90906db143066b12bb459fb6c23ecd4239bdc3ef583950641a92e094e577f54999511d9269cd8a6da10a780717a4a1111b",
    "signer": "0x725DaA30bA35409b848880A9951dc3c8DBA2D02C",
    "userId": "52419076"
  }
}