{
  "manageEntity": {
    "action": "Save",
    "entityId": "84314638",
    "entityType": "Track",
    "nonce": "0x29c77f2552432a81a0fb2b4bb77b60675184fec85511cbd5b5819bc3ff83e8a3",
    "signature": "0x59a279deca0800ff6c0b20a1821b0adc8b5e94f95da769ebf569ac7c325f55d244035b6d872dd74b989b16c66403e8a6c5e58d759b94cc2b84d02c58cc9a62841b",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}