{
  "manageEntity": {
    "action": "Save",
    "entityId": "343434015",
    "entityType": "Track",
    "nonce": "0xdb5ed5eecbfcbeffa87f7d297f4ae3c1c4aa370ab184930f953a3710ee475803",
    "signature": "0x9ebcb9370ff3c97e896258638e28ed6d9dc125652f70dbd13090c50c2e89e0626986b68d7d3adb4a5c16a85585b53fd9c0646616413952c9a2d0642b168c8b9d1c",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}