{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302888",
    "entityType": "User",
    "nonce": "0x00017f8eca52b76fbbaa37afa27732c4e40e1a0249709bb84bb7f72c7ae71a67",
    "signature": "0x9a59a5ad1adedbc8b5bb66dc20dd9d907d4defb27db4280a58fc54dd230d0bdf4f95e52841f0cf6f51fb4fabbf6d966faacf8fefde352d626670705c28a43c3a1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}