{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "224685891",
    "entityType": "User",
    "nonce": "0x53d57a23bc1e80f270c8ffe68d4133e1fbbb20fe1e731f7b5d3d532f16313b16",
    "signature": "0xd9317eaf30425004f7e4a3457221685ef950e0f55a92789e1027011ede5527db3343c8a62499e467f182f3b98828715262bd755f47e79bcbb800be7264abe7091c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}