{
  "manageEntity": {
    "action": "Save",
    "entityId": "40209",
    "entityType": "Track",
    "nonce": "0xb09e6438d2bb300d4f58ea3cf19735e1938065d21071679811f217303f10f685",
    "signature": "0x7ac74bfff9e24d2d25f7b24bef78800d8750eea6f9d869a6b17222ed5d65963e49fb7bc27fa4793f4704355b95cbcbe10f1775e2b02a444abd4b9e37e9dc05651c",
    "signer": "0xdA0eFB0e7b973C487c12501759aDb23012CB5248",
    "userId": "178070"
  }
}