{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54758",
    "entityType": "User",
    "nonce": "0xeefb9ba8b3c54aca3bf833f9b0cd8f1bfd090384a6abe735009a7e9447560149",
    "signature": "0xd91be8374c36485272f9012128aed7623f85fc4a4ceafe37f96c116e7ca9db6230eb31ed56ab9bf02a2920a060e4b6d16c949acf8856eab416de1d22ba3f48ac1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}