{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1698340",
    "entityType": "User",
    "nonce": "0x6eb6de3d73b8cb85ec59420d05618e6ab8dceb82c5bf36b5435e1fa95e402196",
    "signature": "0xf7a5d502bd7a83429fa6233a5bf93179983587513d1ad53aee5fa0b2899fb4a04f89f084284e730e52c229912183b93d536b6deaf5cfcdceb46bb92af07a73471c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}