{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215993",
    "entityType": "User",
    "nonce": "0x3f725a17154a97b8e54f5c8165b895df8b0741ecc989c622c077d094d5e087e0",
    "signature": "0x3b983b160e49932957cd705a6b9bf159cbb39f0aef1bc09c9916789f5a9a68af2af5bbe713a39fd12e41fed74c79247f3ea781636fa814453e28c75175860aee1c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}