{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52412",
    "entityType": "User",
    "nonce": "0x6044b8a51cef31670f264b9d8da08f0c5c37a76f8d23c3a055f463a4faaa31f9",
    "signature": "0xbc9efd37234b1ea580bd9425fa7dbbc171ba4ac8ffbfd0018a31d89d9d4cdc300f66702dd778b2e9b40721c1a4e7123e9c2025e1bbcb3ffc600d820eaacbb6361c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}