{
  "manageEntity": {
    "action": "Save",
    "entityId": "120846",
    "entityType": "Track",
    "nonce": "0xc8909c0722036847026078477d2dc8d0e12a31381946965ec2d81b18a725e057",
    "signature": "0x20d41c6d2680f5a9462babd26805a142f9f6192ba10942bc8daf406642ca0daf7c8bcbf1599f1028f1a3ef427d87eb4df320939ce418bdf41579ba97912f2dce1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}