{
  "manageEntity": {
    "action": "Save",
    "entityId": "963722",
    "entityType": "Track",
    "nonce": "0x521e6f187aa1629eae86c0675df334873eceed9f9b3efa5fc5147946fee9dddd",
    "signature": "0x8b158bad3f23ed638d5c3eee01e65a3780e8e248286d6abb848a107957233e1031c17bafeffd6b154bf193cd1a73b6c92a11d0ee43d3180dde0b264e4e45c36d1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}