{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x816517e0835b5d3307ec8e8374a130a361f56cdac191b96eea647ad89d19e451",
    "signature": "0xa7d5093710f2f1de5424fdfe8a58eb11beec83983e0adce57a2bf78c1ec052fa5ae17a255a94ebf77e98b4bb824946689266fa198e9cec56c12df8e92445fe871c",
    "signer": "0x57DaaDb4e3E2AdC0B422528531BCb1aa05EFF04C",
    "userId": "92642250"
  }
}