{
  "manageEntity": {
    "action": "Save",
    "entityId": "84321214",
    "entityType": "Track",
    "nonce": "0xd2c9e5227217c8cc76169cde9aee41675b8b19ee0369ac72bfabb8fa86e954fe",
    "signature": "0x6c8edba503525942ac6b95d12c757fa495ca16e81844ebd8535e2b1c00c720c5756a91258322a4cca25e5944685e982d55c5ee43ccf63bc887de08385551ef851c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}