{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6d3bc9f265ab60547b40880be5a84db452ff7ed71533b05a3c5bb6b54c0faceb",
    "signature": "0xe1ae066554dc23f06e328582d05d1586738d0039a61c170882e263eb583860590a90d241238f8da2e2fb0b021700f375e0d5980235bb9de2f12e490d5a3269191b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}