{
  "manageEntity": {
    "action": "Save",
    "entityId": "797238",
    "entityType": "Track",
    "nonce": "0x743add2e1360147f2ad714cc8c384c1340c2be17b207f34650ec6a76c5d493df",
    "signature": "0xcd9a95c5987b8031986d0c8870ca544fdfd4936930f323f441ddb48f3bb5eb3914fbc0101575ef1c5ff564e7de56674fd566c47fcf116ef105b372b82843291d1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}