{
  "manageEntity": {
    "action": "Save",
    "entityId": "1094497168",
    "entityType": "Track",
    "nonce": "0x8e5f64d9eca3b4b6e1ad2d5f2f30b26a4f482f5c1c241ff819a03e36e0f5c0bf",
    "signature": "0xac15d0d074057bd687dea622aca5667d7e4cabbc1bf4a8c9f8be42ed6519d2453aacfd686c15acbe389663852096d9344aa014992554ee512c8ac8a8a227ebfe1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}