{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15594",
    "entityType": "User",
    "nonce": "0x25928510d4725cc560d9f589a877b5464a93cd9a11b2e024a51bd0945c381455",
    "signature": "0xfd62534f76e6ad6788f0301ccbbb5d92678a0cc0ce7b1040d3c190cd4ccb68c165632b62edd8bf4497d967c7a7b39bb8cf67436497ad674acfd072344770be011b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}