{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa84dee14a239ce9e32c2d993d3a6c9ef7313b5a3a5aef2b4b0de2a34aa63223d",
    "signature": "0x7ec1fb272ee724b50e20c3624dced7df282e26d25039a3dd83ccc847621c87f822b2f4bedd1538994ac5f81596ebe4fcc0e2e8bdd0743d410cb72895a7e0f2131c",
    "signer": "0xd3C903465a9AE0AEe64FA69a42aD93105653725B",
    "userId": "811143290"
  }
}