{
  "manageEntity": {
    "action": "Save",
    "entityId": "1455888100",
    "entityType": "Track",
    "nonce": "0xc9e260edbaeece1204ea9f31a3cb8d301a74b5b1b343f1141b3ec44d56fbb925",
    "signature": "0x53048f10ea1800ff80e53e34b69fd74a1be085b191659f4d489d7a597fdef50077c34df48bd5625f759ba1f566ae0f4f49356446e105117d08da59aeede3f0e51c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}