{
  "manageEntity": {
    "action": "Save",
    "entityId": "1160070484",
    "entityType": "Track",
    "nonce": "1787573704650116235",
    "signature": "0x26d9bcca5902e7ce93f091c81e7758cd541308c53b6dd2325ed5e4cfd3fc682460a3e19df4007d320a2fb24d8a0fd9b2461765f3230461ad97f12234beb5386c1c",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}