{
  "manageEntity": {
    "action": "Save",
    "entityId": "1865392956",
    "entityType": "Track",
    "nonce": "0xc11281a414be589956c4e806b01e26c8a4a6c1882c1713ce3ddf48f2ee2e2f8c",
    "signature": "0x8ea508eddcaba4039afb8f147d1259a2ba61649ddeb4baa4fd54253b6a61de055462a53d82366e19a00322769e896eca839e198680551a9f53e383335bb368dd1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}