{
  "manageEntity": {
    "action": "Save",
    "entityId": "951064",
    "entityType": "Track",
    "nonce": "0x81a88a17de32058a0c1f7d9e828d037460f6db8d347820b38ad6bd9258aab80a",
    "signature": "0x833a1f430f9511597add74d92dcdd3914036052abed3096b8d9924b14734011677ef2adc67c533e1968e0d0e428f690844c4b251548915ee951e676cf83eb62c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}