{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a57a928becfc13a70845caba3b6a5f8c0f18d3bb86d697dc9995e66694dc6dc",
    "signature": "0x5ee65351e6f9742d5024c87a25854242f200c21d28ade0b0369b736be85b97a6790154f2c9e3864eb1c7639ed2488fa1d87e1fea36f9b9c9036791bb438231861b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}