{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xec4aa2cbbfa87cc7cacae90681e27a4ee120135621ab39d3655870d44725a4d2",
    "signature": "0x67bf1161e11fa6d6df93b64b20321d059c7f789540e96d5db1041fc979e1373f12e7519aea3fb77eb4c4f9f7b742bce33a71d71564c795a392181a178f3b863c1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}