{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6ec2ae78552a0b00ee4feecf0c8495cd3df7a37b6da9190ed9f78f05a5fdf3cb",
    "signature": "0x184adfcfe5e43425a67fff87ee20d6e6b77172dbd18f145c484ea5e985b5d03507bc2423eb773d44f8231cc149b828b1f1bb96c52036a3212fb4caceba63bdde1b",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}