{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "477476",
    "entityType": "User",
    "nonce": "0x3d694b1d2bbbc8fb2255d85a2fc520599885c9b6943b1e228da2ea3f22e04198",
    "signature": "0xec2ba9c0f476d63dc6fff3cade651e2e10a3da1f28575484d0d495d96b6e2a69142f5a94f40d97ceec6871d5f9289fc60cf0738efc425498e316c48f65b03e541b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}