{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044102465",
    "entityType": "Track",
    "nonce": "0xfc93308cd8b00acc18bebdacc3fbc6ab83b8a6c010e23d5b408a4ebdc1f01294",
    "signature": "0x1bcf422113bd8c4de1c922d4f70b20459b3c20c184bed394e835fef7c53505d45851809238d7ff5f5c015f5299c32ce846b0dab07c094cf836372323f63a93221b",
    "signer": "0x019c1Ea6f901A4f7AeAa1daD2842a34Fdf9A9FB2",
    "userId": "798348033"
  }
}