{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "147538",
    "entityType": "User",
    "nonce": "0x5919c0933c9dcbabd731ca412c10dfd96629d167c562346a1f643d6a7f9edb79",
    "signature": "0x571493d97da9e1637f1b8b387c16634ad28dabe2fd27ccb26b1f630d0cc9d6e67f026db2548b88047e3ca9f534792cd0fff9546edb8b136bd89b57a274ff53db1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}