{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xbfbcd94816c31f4ed2212cfac0415200ec1c33425b978c9cfb4a439115fc5180",
    "signature": "0x62bbb746ce8a5c90ab6d851a4875e2c05e527f4e917213fc52ea24caf617492567b605afdcd5d35b04a0a44e6128cbeeae4634976ec298421558474f4b0bec951b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}