{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "384839359",
    "entityType": "User",
    "nonce": "0x3dcbc82d047da275cf88648e550dd2cf907cbdec3e25955ea63e8e048179373b",
    "signature": "0x0d407ae6e9a1acaed4ac121afa66f3dd4f178b7f92b55c11caef15d2b629a6fe3796a941e9a98e81d4a9852607d58f842607628b862ed2b503e095c83ac9f06c1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}