{
  "manageEntity": {
    "action": "Save",
    "entityId": "1827599525",
    "entityType": "Track",
    "nonce": "0x724ebefe1b8c0abc1cb1401d28afecc48b5012d3820045db359e3fa1830ae8af",
    "signature": "0x93ed8b3b1709c9b5a875d548d1164642495a262b847185bc4febd07b01dc26e222b20e130a1f7d8231a00941fa5a94edf547f8be3216bee5f80cef7c03b754a91b",
    "signer": "0xB1D84892eCEBC763e0dd9f98e7B4e61cD5285EC6",
    "userId": "838671433"
  }
}