{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xead0e34d5c83cfe060a2a86d7fb82065da4ef305c5b7363d8915149c8d5de321",
    "signature": "0x55e69439f54c079dac672e366809f0b793d26df9bebce0e68b259584b47496ed073d5ccef3e9b81c44be0715fcc7a4227cb5cdba32cceb71281826a1240c1f6f1c",
    "signer": "0x2caB1F25ffF29Cfe92109050CA216b9Ba52bf6A9",
    "userId": "572021442"
  }
}