{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197834",
    "entityType": "User",
    "nonce": "0x4bb56d8c899ad377519283181ed00d1e34e0c7a3b93cd917e7b11abbcbc54270",
    "signature": "0xf144772c434071a5f0b7e1dffdfc14086577a5854b4fdb5cba3fe8cf3a6ed6b4105ce57e6107711a69af8cc1aaf0cc98417f1c20a88e21715cc2a7e0d8e633b31c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}