{
  "manageEntity": {
    "action": "Save",
    "entityId": "1862775761",
    "entityType": "Track",
    "nonce": "0x09458effbd7c637132f6dcc514c7923124ec4cabbcdfcba3e6d539e16f528c19",
    "signature": "0x9a77f888cc39411b7b67cc96ccaecdb2c0ebd54631eff7f8044c4e638145cfc85d9f874c9df3d97c4fc275a11e935016530440b8eb50b798c9838c0ad5f3003e1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}