{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "857590095",
    "entityType": "User",
    "nonce": "0x3436be9c2a124c414a437a6f50ca20e631a8717f1d9684f4bc4343a6742ecf68",
    "signature": "0x378b15e07b5ac1b56329f1c785286db17f40f8bcc02ae42264c1dc0a08c2e9da1f4e566e42303da9aa43771d7d719c7acfe77fff0bec304b3e40121283d0829f1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}