{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "487350",
    "entityType": "User",
    "nonce": "0x45dc8d4b9274652cec0f3236ff6618a6c94546fda2eba60e2628d9d23d859eca",
    "signature": "0xd2725de7da2b1de313d52e1481c525ea82ebb35e3fa2c4323115eee9f06ba6de2677632baa555f860d052a5424a6583ecf82396836cab8442b8b288356d15f921c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}