{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9dae9ae1557b041a9b3ec80e97f1efc5df9e2a6ef0d7a50b85246b89bf858579",
    "signature": "0x5b08f9696714d954c0fb9e7265dcd34170f0522bae8dd469c2103595ccc3a43f0d65a175c4c205366963e6fe831300f982158e46b7b7964f797c4432d8a9089b1b",
    "signer": "0x198BF1D951031af86d9F9C2d9Eb2b929fE59D7d6",
    "userId": "608204608"
  }
}