{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "980219632",
    "entityType": "User",
    "nonce": "0x99a72c710befa7560f91687ac8db25f6f692c57108d36b3ddb4e7278e73fea22",
    "signature": "0x163e8d6fcd5d0a7ae2e61ade4941a502cc08bbc49ab0a5a13d99960a73c19d5022b16361d130a7d9ed60351cd6e1b1fbab8b6b2cf3f012366f901f3e546432751c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}