{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128508",
    "entityType": "User",
    "nonce": "0x6d8d55e8e985bece9af671631b399e8fc3576335d61fde1b64f86d09e987800a",
    "signature": "0x1521d8010bc40a1a2ea16cfa96700f34f62266a8b74785174166efb7ef49239175a751f0ae97cd3706a5b380abd808bb4af92e7259a21da42604f3c84b3f188f1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}