{
  "manageEntity": {
    "action": "Save",
    "entityId": "605289196",
    "entityType": "Track",
    "nonce": "1786804736853077034",
    "signature": "0x7236b930c294280e91d7d6b8d043997dd580d21bdf1391c6c3f279d300e3d4ea0e7e3fccf9d657ccf1d7c14dc02331d58d77c80abe2ebb00ca43f26089583dff1b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}