{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "899783541",
    "entityType": "User",
    "nonce": "0x61d446778b35cb55f2dbb35815d590dcb6336e8cb704702b9484a489ce9602ec",
    "signature": "0x8c89cfeb8ce866bfea5d602cf8346b57a6a7da4d4dc3e41e1a2f915b54d12b58363f227a3b74e8c3c780f14472039af1825e0fae95c694b9083be37548a575581b",
    "signer": "0x7Ab9762f6ff8B90573F96d200B82a59e9476817E",
    "userId": "473989947"
  }
}