{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21894",
    "entityType": "User",
    "nonce": "0xfb9c6f19248bcddc3857f35d7d68fc36f74e5ad44825339cc3788db87559bd5d",
    "signature": "0x53eff334549e8f81d2fad234e5df742ef68cd906b01f386420f9dd94bbd84fd73ee7717f6b7882ae4817a72b7b9ebbaddcc11d184e3cd02987f54e8a839611a51b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}