{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200585",
    "entityType": "User",
    "nonce": "0x66c0acd351212695e4d50f86d6c23fa59fa66a67d580f5ae3c8c6c08dc569972",
    "signature": "0x494e13b899c6a3061e2bd53f818cc8c3c71f37b0515fa3ba4d6124b30b8962712f33d441b97227f7446fda7a9ebcf6446ed2f8f4e41013f2640033ce9ee4dad61c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}