{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334539",
    "entityType": "User",
    "nonce": "0xf9015f4745d5b3179e00dd8e5beb0a863d47a83f47164a2b801a3b10f2f1cee3",
    "signature": "0x0c422da79dc2cea6ee1a5dbfe41fb448dc6b4f9d0a8866a5bd0d2c5fca5fe8d44bbeb7ab08c3760a7ac9af69d1cdadcdaf8bf1361811b7118052a6c1fd3afe841c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}