{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8822",
    "entityType": "User",
    "nonce": "0xb93ffcba2bd1d85ba761aeaaa8e2c083914ac2fb44f78b0455bb04e6f18de855",
    "signature": "0x85ce4ecb504935d0faf97faff6ac53de1a9d1d035fe7030f3d4e7ff024f1dba204fd3ea24015d7522375736236ee3e23d6f5e8107d6c2b1ea48c02e9c34728a71c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}