{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x53764b40e730aa9c28132d3059487896fc94d225acaaf10456802560157f3ec9",
    "signature": "0xe842fde8e81a62f1a3aa18c0d23e3d061c5de22e77b4adb9b79b81b5044a08865b6f2f5db4cc4bf2dc152679f5447ae7db9db1b8c33585eed7975feb24fd4bb21b",
    "signer": "0x5Abd987043421674d602889e59Dd88Ef78bd2f5B",
    "userId": "408164008"
  }
}