{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870684573",
    "entityType": "User",
    "nonce": "0xe556f49b59de89d3fe7936e997904033c1cb5f1302da18bb50909f195406ee72",
    "signature": "0xae2dfb60da36ac1ea2437a7a8a84413edef97c76b35f91bd2bf02415cfa79e257525df6cc6f9dc8c0dae85ca1dd4d171dc4a9fe513cb7ecbe47833f120ef97d71b",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}