{
  "manageEntity": {
    "action": "Save",
    "entityId": "326160950",
    "entityType": "Track",
    "nonce": "0xf8579fd96aafbaa68af0d25784124d524729c0d9471b453a7cd755fd27b3c534",
    "signature": "0xa393ca98dcd0f6648df15019fd4620bf4c0e0a487d62de22bc6b523c4c6833cb372f60addc3a6900d111aaa6b05e0d8d68d3d623fe16298d7dfa67b271d0117c1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}