{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397192",
    "entityType": "User",
    "nonce": "0xcc0d84e734442c333f1bf3daf49de2c159dc46f2445f0283fc2d8ac68b17d4f0",
    "signature": "0xa76125d3a3d2df4dc16fb2c3408dbc3fd488994f5a4b0498a5ac031e129f00a760e86b1d47ad9d33e2ffef30cac17bab72ace9a8a042963c27a10077d70a45111c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}