{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355477",
    "entityType": "User",
    "nonce": "0x5fdec489e331a0e4364eb5dd309f7a8593c871c256e3b780630df5054e62eaf3",
    "signature": "0x1b0db6fe78d7c7f53a692889a3d10acec39145c5c2df3de7653357703d53035527474999fe4fb28b84e2a83a84f6183cd58e74126c3270c02b3000eac5f14a361b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}