{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059100",
    "entityType": "Track",
    "nonce": "0x5ae5042f7d14ecc666c3722c3d39d9e520770f2c5ae4c9fe7bfdf3327b916090",
    "signature": "0x45d0634166b0995cd74393fd24b34152c9b32ee7e3bed13231e5eb6acfbe77976ef91b99633677a9be274add4cf4a09cb9c688e8220cc092a6c8a9e7854333851c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}