{
  "manageEntity": {
    "action": "Save",
    "entityId": "65029",
    "entityType": "Track",
    "nonce": "0xbe3057ac62c7caf917edcdc135a684633926a318d922a1dfc821a3b070315ae8",
    "signature": "0xa75959d2ebd8b70985e1bb737236b7f95d5f07ae98f16f1628adbe33edd83fe54aa4a20654fa662aa7802dccd95ef62215386268e4b0035c1aae2c8fac1913951b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}