{
  "manageEntity": {
    "action": "Save",
    "entityId": "1055680",
    "entityType": "Track",
    "nonce": "0xd57323c6866fa1131c548f9b4d3e05c7055dd6e24e90cae1bd4636cfd7899ca6",
    "signature": "0xc9f3f63b095791d1a9f8d3acef398b6e20de8b6a556314a474278b26d83c1e242eab321597c4cb891d89a3de9024d1399ad7a2a8217778067cf7f9477277dbb01b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}