{
  "manageEntity": {
    "action": "Save",
    "entityId": "1390033688",
    "entityType": "Track",
    "nonce": "0x082238a8a2cbaa0c0a83c3500435c32fef819c79c755136e5ea5ad2e341afd92",
    "signature": "0x263c78fd86bac66659abeb0dec9fc8b066ff5119a5c2a94f07fddb0ea6f822c6564aac84b6966f4589a16fe8c101a6e3f034bde4c5d6f16f5a04a3a290f2667e1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}