{
  "manageEntity": {
    "action": "Save",
    "entityId": "1811038672",
    "entityType": "Track",
    "nonce": "0xa14d9a309ff1e706a9e641309f692f4451ded5d81361bf962a2b5f0d5778e785",
    "signature": "0x70613b1730ee6d483487662c3f65511c44709f7e6fd97d1f4355ba4d3679aa950a99f1b606990e9232b5799ae66c5dc536d05dc7f0aedc1959a7b0dc37481f4d1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}