{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb5ce11ee5e43808cbf45d0616bac1083300f1efbedd652db08c44d099bf24384",
    "signature": "0x3663c5265d36a29609f61b4fcc181ae7cf7f7f50e818040d026dd06934faef14025c278af8c0b577880b5f586ca6cbf1eb914ca3a542a4e05b8e047fed1fe3161c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}