{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0da07a77c6cf07842d0529295f672c9af764cd4603aaacaf00e6e4c5bdf2aa24",
    "signature": "0x5774502ca6b20bbbe3f55773fce68811125ff45c86c2f07b868e39ae3fb0d3a43bc405d765ecbb2cdfdfe2bd9317fafc3fdc50453d3befff33556f97cdf1371d1b",
    "signer": "0x051bd0Ea2A7d8Ef601A04256B9A3Aa8245483F55",
    "userId": "217588917"
  }
}