{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb94bfe7b82caf11281e0856360317a9579b2dde91f4b67ca76440e5b75c1ee9d",
    "signature": "0x3e410da2c26c4dd65d5d591222e1e9d02783ba04b401680640cc55d7ad3edf5775dd33414a98416462e3d0964d1d8cfe914f4cd34cad2eab97d320ce5ffd1b6b1c",
    "signer": "0xcd14136bFF7B931c548DFbf0Bd3F7A433E73b0Af",
    "userId": "449571604"
  }
}