{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6456",
    "entityType": "User",
    "nonce": "0x75f7ab3bb90a27124435649371283a7f0dc8746d825f1028ccb24431eb87076d",
    "signature": "0x903e97c418ad45132286612c7496d7a988305beab13125dd24660ff799fcc1e60fe0816228a9b43a482161e8b2875654cf001258da0b46b216ebf5a65a58c0411b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}