{
  "manageEntity": {
    "action": "Save",
    "entityId": "1836434630",
    "entityType": "Track",
    "nonce": "0x2d336ac6f0c973b9880143a33f58fcc32908ffda5e63528c749aa5581917f95a",
    "signature": "0x580bcfd6c405f3ac0247c3d0b4fd955315f818ed0f7c0e26af3d988124b6cdfa140f2671e3a20ddbe4d6fccfb7f3301871b5edc5ea4b8703e944a762ce33e5b51c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}