{
  "manageEntity": {
    "action": "Save",
    "entityId": "2077113662",
    "entityType": "Track",
    "nonce": "0x599fac061276c35632e7829e3adb7126213441c2770e0c3573f5333fa66bdbfd",
    "signature": "0x2ed7535eeb44cf0a4e149d475ade9785110db7522b1312bf80ffd0b21a92700d7e511f74f112110609ef0a921f79650c8bf4b4000be0e28a30ebb9f04aaac2b61b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}