{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x8bad33242d1aae2bf21bbf660617e86b0ee00b054a4eda7f76d207c413423715",
    "signature": "0xf4f196c2d5376e05f664e77ab84c3a6c9fcca8043cd194d8e2553068a4f3d4212f5a2a372ca0e6c623682850fa9f8d3d34ab93e59e3a6e35e1bd9d83201761461b",
    "signer": "0x4950A7c498b6c214e83B79502162b7f248f9e6ed",
    "userId": "499895630"
  }
}