{
  "manageEntity": {
    "action": "Save",
    "entityId": "1065958822",
    "entityType": "Track",
    "nonce": "0x143eca2f3135d698f3e8549fc15ea1ebd1a7bb5babdec1f935a01c24d67d8b55",
    "signature": "0xf41928a5618bcd0df52c1c8e069362d8679e60254dcd0e78a8f7ce1a75929d37600cce5a25f47683012d028a1d115a39385f363a6b4342e6bf40ba26c8ad343a1b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}