{
  "manageEntity": {
    "action": "Save",
    "entityId": "1280839687",
    "entityType": "Track",
    "nonce": "0xdb1ce83e1107fa11bbaa5689a81ebb1cc2fe90f866f6875d91d2b15623370f01",
    "signature": "0xaea7bd1bcf05f37613012d26b3d867a097d8676de44011d2c9b3e7715538490e5fdbed211ee3ef705d82a3506ac5018dce82e8f2af5ef3c5b82e20ce81eb784d1b",
    "signer": "0x56D42B79b21D81D9402f53017C457dBd831591B5",
    "userId": "918223593"
  }
}