{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30638",
    "entityType": "User",
    "nonce": "0x5d3a2463dc7a648fb19f6c0a87c0997258713e78f8d3dae078552ba08f04d590",
    "signature": "0xb05459f3d1cd940e7fdb02ad03cb4b7cb290edfe1a594c16c6538683352579c94e628a78c115094583748f1837d3c3d4c13b628f5dd29ca22f7633994cb78d9f1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}