{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "864415180",
    "entityType": "User",
    "nonce": "0x8d983d04b17bf2cc145271bf1b63d7811ab6d7f3daac7499a924b4438c0004cb",
    "signature": "0x69eb93c186e493d82980b45ba215433f3a4496e971190a461da485cc0fd23ba139eaa640572efcfc72965869387381d32c364654810b94687f6a3807f0c3c6f31b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}