{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x474da91f12fc6f5e18cfd2d2034f07e4c20015a54eae559d3baad8d290919c75",
    "signature": "0x4628ba0f7aca8057626081155512e792b734b7af13aec6e3c8c4b31e9e32a29463430bfc22446f9e7699eb223e152d400950cf1474b1bcb11c53a569d36e39381b",
    "signer": "0xcE1000874CF7A0a7b16c35A55F7D6f10C607A868",
    "userId": "442277469"
  }
}