{
  "manageEntity": {
    "action": "Save",
    "entityId": "60324207",
    "entityType": "Track",
    "nonce": "0x17dc8598761f45c3e2f46e1a3be776284f1b802ab355e2cfb47eb3d140c07b5c",
    "signature": "0x5b02e1a460b86b2b74c84376c608cbb365433ffc6756314c0ba35b5a42a44ef90a2eadf306b60f70445217a3c1ad80a949bf68f50e72366fc85e11e17ea91af21c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}