{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "550138957",
    "entityType": "User",
    "nonce": "0xaaaae8497b5da5b77df396855d4bd8ac4f5273f357561aba029ee1b82e7c8624",
    "signature": "0x9b117932e291d59ccb64b41bf2c98b248347e2650fabf5022af2eb8d478cf3807e08f63ea303fe5431eb1ffeff9488a7072105242676644149743cab16d16a2f1b",
    "signer": "0xcE770fa346f7BC8641fB998220480D8C77045850",
    "userId": "993121304"
  }
}