{
  "manageEntity": {
    "action": "Save",
    "entityId": "1351678213",
    "entityType": "Track",
    "nonce": "0x61b96253c54d52b49874bdd77833e34bc4447500d01bd70d0921317c7e7d1009",
    "signature": "0x53c0b42c64d7ad951b5a803eb630551427ec93d3f2783bccd95d3580b75186d733977a7ba08ad8b707340a010d97333925a302132b0d429d44b8244fef7fa7361c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}