{
  "manageEntity": {
    "action": "Save",
    "entityId": "968856198",
    "entityType": "Track",
    "nonce": "0x80cd8c3506f339ef09fc75a03c9cae4f1466b316c6139097f58f634ae17f6d01",
    "signature": "0x56ce067d884c6fddd9a302b02e5a6cb597926c72837aac1803e6f864c35df36d769c95cc02b1cba0078da0f6da84f924682ed44e3a9399c7f9626be4f8907c9a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}