{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1dc4771f000cfa4fe2baccc8e238727e5e47c0aaf0201399b27dfe83c1bb5e09",
    "signature": "0xf3dce6c7fc02aaacb9bc61701d011171dea2b8b1ce99a546286f45473d7342d86bf25c47ba439fe7fc6c698f3fcb664fa10c8737d96317e31bb6926887a7d1a01c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}