{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x577b0d651e90a3e024972b521b203b4df28885c96ec3f6a2fd781b47718e27a6",
    "signature": "0x65fda4f17136944739334eae379b0d58046196ae008d38753b4ede27c701b199723b3eeb28775a58286adbadccde1bfd4093065a064bd744855eb9a547f3152c1c",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}