{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xa86f7cc93922c3db4e3225f6a5eb5f0fbb7ee2910eec0f82c3601c30031070cc",
    "signature": "0x5c734fce9aab1707963aa6c81e39895952257f703ffe0e788cdcb8ac89dec37560d794de30e50694044f8b5bf63825dfe854008bcfd42b239225c5e5fc87a8f31b",
    "signer": "0x08Cb4a264810D320229f229688F558F5894fC448",
    "userId": "81039471"
  }
}