{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "378244521",
    "entityType": "User",
    "nonce": "0xb8c69fe8509c2382a63415f174b699b5aa3dabff690ef0e6c7211faa63436b73",
    "signature": "0x02c6dd54a74f1628c2b7191f6ee8caf3879c73c4d8b1ef7284f24e25b8455cba3d471b4544f230dc21038b3b11960736df97327432fd6db71b722017a9092d801b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}