{
  "manageEntity": {
    "action": "Save",
    "entityId": "1795352071",
    "entityType": "Track",
    "nonce": "0x4b19f6ec4a60a2189b106475ded59b2fb60077fe51fe71716e2d147d35577815",
    "signature": "0x308a5ae0c8d01c5c51550b1501879c06fc675bef2afc8e2ae8851bf52cfb2fb167677908923323300e7a5edfcd6b7defc2211089276b88891ff536987f5fe4901c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}