{
  "manageEntity": {
    "action": "Save",
    "entityId": "1070531050",
    "entityType": "Track",
    "nonce": "0xb2731d25bf5bd85df4a9c1901664cd43b8ace6a7f459a1574f3f6edac4eff96a",
    "signature": "0x1cbaaae63e5a9f6328e538669f1e8162e13211379c7ff4e7f81278880ccd970e673146513011c996e45d99e29dcfaa89a43d21ef5147a10b399f3e7b5c5812c91b",
    "signer": "0x8097f7562D3D2F9cbdBA391c45c0D376E438625d",
    "userId": "51978829"
  }
}