{
  "manageEntity": {
    "action": "Save",
    "entityId": "1861540827",
    "entityType": "Track",
    "nonce": "1786846653482442042",
    "signature": "0xabfb87e14ac6b13d4b05d6aafaa7860ef579175ccbf9b85cec0ce945f3ff77dc350b5c5651e876402c4440344787a3e51df323469f348c3acfdeddf9117735f31c",
    "signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
    "userId": "451691735"
  }
}