{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354034",
    "entityType": "User",
    "nonce": "0x5e9afa290b1d5d6e4062834a435c5dc8d0bdd6138d1a4fae0295d02a0d62e2b8",
    "signature": "0x56d692d3d855e100925e13e754c3dc7b9a744d46bf80821721c25d2f81b3ec9f709b22d3ffbaabaf4aeb9085c0d2fa8977b66db4aaed690ddcafe932c734ae6b1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}