{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb0d2d19417cafec1b58150a91411667bb80e487831ccb1f018e36bbd29584d6",
    "signature": "0x397b2b8f3cc3f02e734af0288876d0cc69ca247f651699d9b565c2bec17113374d60f757b6ac88ffa50345e11fb60684dd8137aad2f253327ea921c8260c63cb1c",
    "signer": "0xaB3cb188f1f007f3a3Ed10BDd1eF15345eDDE18C",
    "userId": "279192109"
  }
}