{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326483",
    "entityType": "User",
    "nonce": "0x15e920e14fa5beb267a209ae46aff160c6a9326bbc15fe19b54f6a92a6c78096",
    "signature": "0xb4da8c1da4fb28c6831d48604702327fdf2632a097d6e6a084be25164370ce4253fa963ad602c0a5053c9d4d49f5618007cd770776551d339d4833048e05d12f1c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}