{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "757004091",
    "entityType": "User",
    "nonce": "0x320a469a76aa4aed4d7f1c03690634dfde46b1832eb1a2775c23b0eb0d5620eb",
    "signature": "0x446a805997fda04ffd4b7472c79f22de70d1a49096412b043b9a2078a1ff42e77fa0af48f63d6f429b5d774fb7c3e7bffc7e01986f5cfd8d7771d55e7d97fd3b1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}