{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43121",
    "entityType": "User",
    "nonce": "0x12365eacd7463d85962f9db515a9a44911b39c44e8e557e36ae76c1bfccf2c88",
    "signature": "0xaad646025c1efa656684921500b07af02132ca5c5490834318c13fa8dad76465106cf83b0e89ba97b02525ec93c13c8607f3f478656f8e4f7316cb3e546a35f81b",
    "signer": "0xEc483842272Dea925128F7ea8Bb85F671f49bBAB",
    "userId": "212561617"
  }
}