{
  "manageEntity": {
    "action": "Save",
    "entityId": "938781323",
    "entityType": "Track",
    "nonce": "0x4260a42a441aa82accb93b023aab5c9bded656fe5f5f098af0b62120d85f15f3",
    "signature": "0x660fab736db14093cae4649babdf9697c6276bfb60f3d0c21a6abd55b35672424a34d4b35b23a88d999d1820b009b483d2c735375eee256fd7c2a45c790ad9f11c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}