{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x3faa8ccb760a791f56af1058580878a9376f326d324d51fad93a4d8a91d64ccd",
    "signature": "0x3473f4e6c349415f2fc6431ebf75759fa018c7a96a044182af7d90ff8387510e7d7cc04acc22340997d189aa475ce053f8252e5a7013cd140e69c2b7ab0411681c",
    "signer": "0x0fdbE0966d6f65E3DE225D16D06131c10d4F2b3e",
    "userId": "560630042"
  }
}