{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "293976821",
    "entityType": "User",
    "nonce": "0x7b82647b8e68a1f1d1f5a3d68cdfdef4613da24cabbc9209f2be27392a660cbd",
    "signature": "0xf02ab832dad0a7f5ec43c867d4dfede3f9e98dbd35330c678ea3461341a3a21e337eb866f8d736b5fad739f1a7bbf1fb01963ce01954153183d3304d799266401c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}