{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599751364",
    "entityType": "User",
    "nonce": "0xadb3cf0184a6f0ab18a408fdb8703c39098ede4b21e0ed40d60a2c87b14aa039",
    "signature": "0xea64e3a0f3d4c66657daa27a14c8ca7266416ca34b58c22ab2b7448f3ba74eec6c06b686f9ee5cdd9f69676dbe6c74166b2c7267184ae1b26fe56ba8221673821c",
    "signer": "0x95053e208ed4683dC71E3025336b339dc6C13f1B",
    "userId": "90610656"
  }
}