{
  "manageEntity": {
    "action": "Save",
    "entityId": "1831285303",
    "entityType": "Track",
    "nonce": "0xc4aac3344a34c2a8762654908dcd5db07118982b87199e18e382e2b0ef7d42c4",
    "signature": "0x4a9c65fd1601dc282cac02a0d3063d5ce1ea5c62fc8be41a3c08028e6d1edb070c96ef508691f140d3bd5a54fbec0ca249af1cb04b7ca280ce0e4ddd1475ece21b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}