{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x915a8004dd664d992924c487c63461416c255905a227c9d7a6818e80c86e340f",
    "signature": "0xa81d5c7b207c8ce6a11093658a795da9fbe286581201b7982c0daf03ee68a92a2b33449c8a6aaf67a95adc57a692f6764f0ea098003ade3f55429f37ac97c07a1c",
    "signer": "0xa34Ced4F52f585b36D7A5c2e45906594B875e6CD",
    "userId": "425430290"
  }
}