{
  "manageEntity": {
    "action": "Save",
    "entityId": "102596682",
    "entityType": "Track",
    "nonce": "0x02d756599bf1655677ffd0de5045623fa8a5e03c00a2dbd10ab13256000c6226",
    "signature": "0xe98e0e10586ac4a11d459d5388dc5f8c2af170984bbd86f0d407d9045d51eacf6b507f3cdb66cddcfe2b5ebd16d4d7a7926a9e4fc89d4bf2c2eb71de45fff0c01b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}