{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x826927e8d637aa78d5438e764b580fcbe99bf9a4a40f035092b39b6b49e4c833",
    "signature": "0xa87295339dd5454a23006db7c7e190f8756ec9da6949ba773edd9ba7faf30e521bc086c588417f0d9f4b9a33410faa5741632ab4f56d1f02ce08d2de254bde1d1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}