{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "856877663",
    "entityType": "User",
    "nonce": "0x17b555650b83b6be9a5193399e238357ecf2ca67e7fa7684bf70be4220a7942a",
    "signature": "0x555ecfb340e5d90c817968611300d863f114294d968cc7ff840f8ec5329dcc5c32cb5ca5817e37c0db4ce127a868b8c628410d52ba8142171f621683a66fe2e71c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}