{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51449",
    "entityType": "User",
    "nonce": "0x90b2ce49acdffe2734539bef3258db732c83a0a3ed6d9ccf933b082788c00460",
    "signature": "0x9b9df04991d99cd79b95c8613690391393e918c2542fc59744d9ae5c2faad42a7cf4918f2a24ec56d5aa5edc25917cc829b7e459c3892519bd8c602289481eaf1b",
    "signer": "0xce0095E8E9Bc88bd9bDaB88670ab4f8AAD4457Bc",
    "userId": "511852300"
  }
}