{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17500",
    "entityType": "User",
    "nonce": "0x1870ee92adef5287ce2999d62c319d2853fa8267e9077f77c80d44250f78042c",
    "signature": "0xaf5eb115a299cfe210c155fca39d61d5941122435932b091b0ad48a839a9053e5bb761cf081dac88919de5346a1b3d2d1c2dd5c0710a5e4278b35a5de284c0be1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}