{
  "manageEntity": {
    "action": "Save",
    "entityId": "62531764",
    "entityType": "Track",
    "nonce": "0x563cf96831ed6394fd9080b08fe3f717294b24d7d6d4bfc10dd24033f83d1608",
    "signature": "0x990e7d008c9bf850cf9e775ba6d5a6df01d602292bdc8cdca34d30defaa2347a090f250e0b3363295913f145476ea8f874b4532c6ac83c0f793669177a31092d1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}