{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6200",
    "entityType": "User",
    "nonce": "0xb8638e972f52a6378d6b88f63d8b97476ed39b91cf32f537869770e5fd60459a",
    "signature": "0x5c6f4d105746b36dfb8f8cf988b950bc157bd85a8747a6fff20017871f79b5f91a00da349d5b363c9dad3fd0c1102073fe612fce9e6c4186969ff07823b381ed1b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}