{
  "manageEntity": {
    "action": "Save",
    "entityId": "2055006122",
    "entityType": "Track",
    "nonce": "1792352149469193042",
    "signature": "0x401b6c4ba3998fd593f344c4c42cd258fa16b06adbb5a826b8d678939a64688078f5fa1f78225f6c8050e23e481fc45797055181d9a31235f1755bf2d54903a41b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}