{
  "manageEntity": {
    "action": "Save",
    "entityId": "2046976487",
    "entityType": "Track",
    "nonce": "0x10300bf45dc17b22d5c0191d1032cf89ae882002a2412d9b2378855610f38d33",
    "signature": "0x3e8f43ad97e231f6b248ffd493066cb5f5a8140cc1cc6801979805abd3c94ac71d2b474806edf224c5225467cdddbf49897c44f6c17655af41dfffe80bc6f3001b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}