{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7fe672cd838a521b4e48822c4f54eafdbe93e7adbe37fe429b82e54300b98bad",
    "signature": "0x7431da25d410d5ecf6a4a5eb1badad720dbdbfc95d9343b1546322a4ad2af4c328a13f5efca1c3245bd79d8969a428d4276aeace5782434476941354e74a0ebe1c",
    "signer": "0x74Cfba397474D1C8E5568957E9684113ad5A2Bd8",
    "userId": "576874887"
  }
}