{
  "manageEntity": {
    "action": "Save",
    "entityId": "2107242746",
    "entityType": "Track",
    "nonce": "0x9da94987493f6cedf1e8cca7e5373bf20e95172ab7e3502d44bdbaaf555adf1c",
    "signature": "0xef28f01d16c0aac1536d98c923e4c60a1790a39997071e5ad9d5569e382c3604398b15f391f412da1381a77ad9ed16f174d0ceddf56ac616f7cf72a8c7df7a731c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}