{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xd002623e641835053ca59243962d6c85251ba9dd34b5fd25c11ff8f86e04edcf",
    "signature": "0xa950a005c0c7b56b6fe65e00a3ac3ff1c89ef8499645f362dfecf15163e9d06c16d7205f4ebb8c1b6aff1f204c58c40b61ae04006c19a9dcc9b413ec802c8f861b",
    "signer": "0xb7cfC3e8ADEA33d90F4f4B34f672a1C391955768",
    "userId": "120328"
  }
}