{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904405512",
    "entityType": "User",
    "nonce": "0x58011a9e07e88826c7167cf9c6efa604977eae8da6e89e5272f0fa8c5ec4cd7a",
    "signature": "0x22a3deff5860c145bb6dec908ee093adb18c49a4ba152d7d7f9f767d808d86034274b8a2cad96be3958315df4250566f37edaa669f54d9e7c1d5ff07403efa491c",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}