{
  "manageEntity": {
    "action": "Save",
    "entityId": "1023093",
    "entityType": "Track",
    "nonce": "0xc94a0c86d95ab1fffd1b9a08afb4ec318806cfecc7e602d3d574c00b616aa275",
    "signature": "0x01d07469813748a6cf534bbbbdd1272f77cc7ef556dc4a9beba083fa780ce26d41f5ca95af08c22195633359711053b3f34d08368d19378241d34d839141cbf31c",
    "signer": "0x28945B345Dc8334c21B4e932dA506ca6Fac7e18a",
    "userId": "290283513"
  }
}