{
  "manageEntity": {
    "action": "Save",
    "entityId": "1834455945",
    "entityType": "Track",
    "nonce": "0x78291cfea2cf832195cb129e20736b4b7ee068292d57958b8b676f362005c0c2",
    "signature": "0xf38eed45d0b6264af5e37e832c5c51029cfb11d7569e083105f4b3402032d735758b2703f0e8389043623e3d6e7a7e4c612c819413a9f8328bceeabac1366e7f1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}