{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28851",
    "entityType": "User",
    "nonce": "0x5d9c83a36e71c4666b9a6ced1f95fd1e95e19c0d660ba4d53b18aa63edde7890",
    "signature": "0xac925409e013d65cd356cbe400505b4c891ff64a81bf521ca1cab0ee211ca7991ee79472e66d335f363732f116cb05550fc042e5dca2cd8001b75ad7d59216051c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}