{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb091542f5a61724f3be96cb495a349fdafcada7b366a77ef251adacf16c95151",
    "signature": "0x63f1fef7e5011760db403998a16d9a2faec847796674ecc398494aec9f94ba83092438fc1ba2e36246a86e7464a29754c320d55cb748accf1ece86355a7ac1431c",
    "signer": "0x4f5054353677594Da8B00602DF03a2C18aB5a9Ea",
    "userId": "897638994"
  }
}