{
  "manageEntity": {
    "action": "Save",
    "entityId": "1996434105",
    "entityType": "Track",
    "nonce": "0x204cd214197c8f0cd09b3e63fb25ecedad0e216f1f8cd2e88664571ccc1c340c",
    "signature": "0x8bed3d46a7462b0dcc057ccaa2af5abbfee3cb0e56633d5824c084059c7ce8ad53dbc147082fb804d8d4bd38c88a00124d6ab570c7564c37002847599eff1a481b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}