{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73781",
    "entityType": "User",
    "nonce": "0x93d7c2515caf9b7e4b8ec61eece8c8324c81878eafa3af3bb3da123585340a32",
    "signature": "0xc64656ed6507c6949df393210193dce6fd0d81fa2ffd29ae206e2f5e431afc7976a33776f34662a9d412c3b1b277c42caf8c6c0458f532ad7916250b35f99e951b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}