{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489165782",
    "entityType": "User",
    "nonce": "0x3fc70d936ffce326b7164a74421d55830f6b045334a40d5e0be4975fa6757481",
    "signature": "0xd5acad190c3b15c23140077ff11836487f6fca1cfa28efe9f50397e4f2ddb99f2479fa561963f88fa664c11330da170bd4da86e5a79fd64bba2e62d5c0b44e031b",
    "signer": "0x887ff90b6e9a2F5c6Cf1E862028545C66FC95d72",
    "userId": "141224956"
  }
}