{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x4d8a78cef58f2ad160f808ba5c359acfe10f20dd1e07554a6a5b0320755fdcba",
    "signature": "0x9644c3ea95542e3da197421f1ab538507598cb3bd29a2e82c77129039073415d435c3be631d629198cc077318a6d767ed7a415d2f1822dec3be57122058a3c6b1b",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}