{
  "manageEntity": {
    "action": "Save",
    "entityId": "541124",
    "entityType": "Track",
    "nonce": "0x107eedfcc4948bd892e86d2009675e388489b7a5be0566ecfde207192c708174",
    "signature": "0xfb5d34b37bc63f42edc7dfeaba13eb1ed2efcc644976f3d4968b7a0181ccd3c36561d8e9fd615a5fd2073a055a79f4bb63f54c55089d6fd9c60788a94a02cc4a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}