{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54988",
    "entityType": "User",
    "nonce": "0x8dee1f69d9b16ef6e759e29a6f35d28e0eb01db09662c5ea02470ebf7bb9c417",
    "signature": "0x8bce5fc2fc85188954004dd25d071a939ef1adec6a6d36a46503653c7d88cc3e35e08e720e090b4e0cd0fcf6e6e2191505ee056133a2161f124667c2f018aa731c",
    "signer": "0x21ADB7f97E1a46192A5d3230E20306b7b899bEBA",
    "userId": "305884662"
  }
}