{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8571fb094f947d5a8449c5ab5692418f378d03d4cba7145e7e365c7870d22aa5",
    "signature": "0xef91dfa4c63443321c6906e5f8b842ac4969827ab52b430443dd69ff2cb5d4c146570c27399c2034d6865ce29c49539aa6574f7128b4483a12d680641f03dd211b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}