{
  "manageEntity": {
    "action": "Save",
    "entityId": "941677785",
    "entityType": "Track",
    "nonce": "0x44ff19417f55efa761720fda31979e35754a1f4b1be0b4eec743cd0a4e165445",
    "signature": "0x7228c72f084e3f25b3e62304a507cbd498f3b06cade73715c63ee87e7a4963576a7a9beea0cbf2610ae79a1866cd82105c6ba916b98f4ed8721386b8878337cf1c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}