{
  "manageEntity": {
    "action": "Save",
    "entityId": "1799729804",
    "entityType": "Track",
    "nonce": "0x4f95bd12ac54b2e31d8f3b1f6dc28bd09d86cbca740814cb76b2b637417579b5",
    "signature": "0x70ce86a17358573ca978b066fc8484b983ea280708df9fa6a03bc23df37695ce72a474968da28db4cf9e351ad2ef7fb4b0e653dadbd2bcec84eb8adc2471596f1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}