{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678556080",
    "entityType": "User",
    "nonce": "0xef5f819637aa4777ceb7f614eebea56053e836f5e2a4e57d4d3ae825a152915c",
    "signature": "0xde257d47722925625902b08bafcb69213d071fb1fafa0ca82e1fdf1bab8d4cfb7431905965ef021ae4e012a8e870b8de43e4268b7e7c65ab3afd9fc9df97e6e71b",
    "signer": "0x086a15f4E86a597f3Daf8ade93bB8C509A25418a",
    "userId": "599112855"
  }
}