{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x336bc51ba94e2c43ac3b56a39b852fecdabe486d0c733e49cb86613fde7bcf13",
    "signature": "0x90fcb172165ace30ccb77b59c0d2fe103d2294f514a69c456b4547cd70b1ea0c1f3b97e5cf9405d36c03f6126cb91aaaf2665a0a7d6b3ff63053db809e0b1c541c",
    "signer": "0x1771280501AaBc026030d3f8dE3A38A03C1664BA",
    "userId": "668262132"
  }
}