{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdf4b31df31b14ac26cecb449c0fff52a94be6d78b2583af242dd6c07c3be96e7",
    "signature": "0xeced8a3872444fc18b004da5bbda31fc1fb17c569d3f00f998bd8a78291d0ba90f3f8a8a47087f350b0df45efd79881f05b7caf03bde34506cd24dfed8c6f5e51c",
    "signer": "0x8197b09A2fFB7f7deF0BA93abdc226f5E3cc1B0A",
    "userId": "429886403"
  }
}