{
  "manageEntity": {
    "action": "Save",
    "entityId": "932188194",
    "entityType": "Track",
    "nonce": "0x64d152ed585b4b3a248e239767d693c66cf2ee8e508c51aa30a667e5b20c2b3f",
    "signature": "0xb57be1ae718ae3bbe593316c1b7093d6d4d7453cadfc8f62f64ede2e09e97d605945fba2dcf04fd7f800b6807e49c7730b560ff6266b5d664df742b8f4e89aca1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}