{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x730d358816b08653d29e76752b96b40a95924f623f151bb4789c0de974a4a7d3",
    "signature": "0x2dd09127ed50a715506d1c82138d9e84fd2ff0e9652f348587ca33eeee9da23b512adb10f5a91e67d96dfdc42ce37e34efd7a3d44b996f75c391cfcd583081421c",
    "signer": "0x65F22dd9Df3Ffd8B830e556A1fE1a14e67fAA319",
    "userId": "270929602"
  }
}