{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13214",
    "entityType": "User",
    "nonce": "0x1ed3627f5cb8aed7e4d5c439654b8c9e292803897060778f737ce2cc4c86b3b8",
    "signature": "0x3db6b03479cdc7dbac56d62beae8d6f993e05633742444fec30a813a1aa96ed8346febcd738c0e8673a592e39565731b30ca6259cbdd402b9c5daf853947c8f01c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}