{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbba597b3c2416372712baa792b9c2f14fb1f0b26b18f27541a4e41765b0109c6",
    "signature": "0x335ec86bfdb105cb106dab47f1c6e8e57c3ec6e5fd241a66bb4515dd91b1ea5729de1f789b28686804453ccef7b90160248d5a5e4c600b498dc836cda5dce2b01b",
    "signer": "0x15A2d8daAAd4924f264fF43629DCFA026583216c",
    "userId": "149116140"
  }
}