{
  "manageEntity": {
    "action": "Save",
    "entityId": "322771029",
    "entityType": "Track",
    "nonce": "0x6051d045cd56f2b4a51bb9144c029ae66a5eae6f7fdc5109cb95048fd3a0c5ae",
    "signature": "0x85af4057ade20bd8f64dfbfe421b8f8875878b48ebe4a8f813d46e25cbc22df42bc9a4fcca8426b38dd18aed4b78ecbedf08f526e7709237e158ae9153ad4bbd1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}