{
  "manageEntity": {
    "action": "Save",
    "entityId": "1382215887",
    "entityType": "Track",
    "nonce": "0x21e89a91230866255c81366d5c6dd9b61160a59510712869d5cb9c71cf78d82c",
    "signature": "0x211eb088b4dc4830a2efce3047d42f0f98a97bd2e205e0000c21b613e57ab4c97bee318fb88420c54cefe95d3bd24d543a1a5006ddc1c8c34822857641327d161c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}