{
  "manageEntity": {
    "action": "Save",
    "entityId": "1124333834",
    "entityType": "Track",
    "nonce": "0x95f0dedec4ce927b103de150c4607ad35fecabe6494dd1d070e0fbfd44569d7b",
    "signature": "0x6d57220eb72f507747272b13a9c73e700a43a0ec9573852f5500d991899105a66819fdecf5502b80b3d3e73b1d33516820f8fff18e68d9fe07b37bab3fdc603b1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}