{
  "manageEntity": {
    "action": "Save",
    "entityId": "165320",
    "entityType": "Track",
    "nonce": "0xbab4a3178d72607d3020608cb7818bfe0d51953c9d70c0d1e4fbaf030eeeba7c",
    "signature": "0xc9b7e0297d207d19d56d0c9be65d1d63814e0572cad9146a2d718210d37a36182ef4d0e766c63304ad1f3ae69de3248e343d2fba974f0786dd76a637defd5b4d1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}