{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "41804",
    "entityType": "User",
    "nonce": "0x9e546744678924dcd1e3f81d7a98fc91d46068ce21900878cacf50a5bc6ba1c9",
    "signature": "0x2d06d24fe3114496b5cf87d6868553df5d721613b5775b299561ec5a7df138160eb053747d0f901986b6b5c8f4113f464dde9a1e5d960d9cae7474ab8bb5d1291c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}