{
  "manageEntity": {
    "action": "Save",
    "entityId": "61700366",
    "entityType": "Track",
    "nonce": "0x7e4ea503239fd57ab370b914b7300b9627db53bcafce202e136ec86abeb92f5b",
    "signature": "0x2331d1dda384bbf65309ff38c7d854c47571fa09d2c3a187f7d21bf93fe0d7c1177d2e045b20af043901d7da41e9bf4d3fe9580138fa6333b19e5deb6e504ef71c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}