{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54120",
    "entityType": "User",
    "nonce": "0xd4ca446ad4c14d20d8b30f7aa8c23a8743a3ebdac5af82680026e4e1ae99bb8e",
    "signature": "0xc286f3b1f3afd29059796d903e10a22c67db1e1563d6dcc7a459ed79ed77c9b24b8c833ea4cefd432806bf9d8a0adfb49d97be552478f156b5794e1a99a7f0f61c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}