{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78449",
    "entityType": "User",
    "nonce": "0x598a68d0fe581b62ebd8008980ebab897f9c9703835f4ae572bc542096373a50",
    "signature": "0x9d2f6470a4184969af4f2630bacf5f699e1c2888a55d93f26c8fd56eeaade09f69cf8a4753090dc2f1fe35c1f0f8f6aaa7d450057c979489b66598d0ab7e8a871b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}