{
  "manageEntity": {
    "action": "Save",
    "entityId": "51343",
    "entityType": "Track",
    "nonce": "0x6ec4468e626986f1630c78f13f562c5900adf9425a28cc6117c024bca6fd061d",
    "signature": "0x980294caebb3bd90abcc5c320fa9b74a246f57722ef2229fed34df4206e89ba53cca7d684b30b862d69d83fed59257e56e626d277da7db41e440e44bcc7ded671b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}