{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "344578316",
    "entityType": "User",
    "nonce": "0xd5ccef56ec498a4936add9792633febb29d8c3b9fd7712c63d2d6d6608cfa05e",
    "signature": "0xc4972373d6e6aabec51fbd39a1e4ed54e997856c64b2e4d85084529b6e0361bd045ac6cb0ddd8b94b77c61acd011a6d223fa2946fb8dd3bf1d5251352f4710841c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}