{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb4b6d3910fb889e8462894e2490fcf5b6b95b4b7d3ca3b960e5ee34373f72c2d",
    "signature": "0xee482d3573a71760780c534ab42fcc054415d18fcca70757cdab49dd9c87962576cb991209f727d7675ea66e69c8ed15a25aca3d48a84faa3365784c0315ee911c",
    "signer": "0x5Da8B4553216Faedf54f0B756f3d3BA7F6781A2a",
    "userId": "680517375"
  }
}