{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "384526",
    "entityType": "User",
    "nonce": "0x2121f720a138d11ce06e9852aa74e7e0c307f01362c5fefc225e987e146c71b7",
    "signature": "0xbf1a9e474fe588bc4e9f088b0a16ddd9087405d28a9b6fcd769fa1948cc3a3a5195b742696d0047e5e3f8da70c2e84e46053672896385f75a0aae5e4f68b22eb1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}