{
  "manageEntity": {
    "action": "Save",
    "entityId": "1042098",
    "entityType": "Track",
    "nonce": "0x2ab08a08929e0617e089c88110be4386ceaac2912944ed51b5bcb3ade00edd98",
    "signature": "0x274a017e60e8ac6f304e0772f38b6757e988b4bf1a5b751e00b2d653e0df676a32b3edd499307da32093ca87a49637362cf44ac3637d1c8b805d929f3edc83651b",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}