{
  "manageEntity": {
    "action": "Save",
    "entityId": "2065563858",
    "entityType": "Track",
    "nonce": "0x9bab42f931ff3421b013c8f81689d9d322b81a798b52ffcb0dff04942110593f",
    "signature": "0x007aaddd6c618ccb731ea94fa480de2781fcf5f4b7a44c220353bc68bed5788369a623abae2bcaeda0ce476f978cb2feddf2a5116e42134ba6c12c891e9d1b791b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}