{
  "manageEntity": {
    "action": "Save",
    "entityId": "245280961",
    "entityType": "Track",
    "nonce": "0x8dd37bb94e4482c7624f1c6e0e531fd2a1c9b7981301d27b85b92ba4bc53097c",
    "signature": "0xf78fe1db8a6df7c384a6656013bafeb56adc60c9235b1248d070cc4fa6b44bd05d994a183976e17050a40d23c5eaafc6729eff5f4f620e8e2aba3510927bea991c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}