{
  "manageEntity": {
    "action": "Save",
    "entityId": "2036564831",
    "entityType": "Track",
    "nonce": "0x9fa04683933f068db5bcdf9bac053622915b90c36922a88167f1ed54097b6b51",
    "signature": "0xfc32ad06d3475732999772a2c9a44087d552145daa3550402ffc93a65f2b49e71ae9189b2cdc8d57b365501686e8ef06a8e54fb20ad6e08aae708f5ca95bbb711c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}