{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd4e440ad5720060393b4e01d7031a2473f3937216bf8a484e6f862a550796e57",
    "signature": "0x492bad35bfdbbfea9dafab01300b1a1f56b5b206dc68d51293bd100f9294652f16fc952b1483bab7b5e99b7e3bcf6cc16542100a60980df8f35e45ed6648db9f1b",
    "signer": "0xd24c54f5bbB8d2d7B36CaF97A27c265FF8C7f77b",
    "userId": "240030887"
  }
}