{
  "manageEntity": {
    "action": "Save",
    "entityId": "410813",
    "entityType": "Track",
    "nonce": "0xec17cd7af800f0116843dec96b0b2380b82210d36e55e3d13a93db347e91207b",
    "signature": "0x54cff5a7482018d3de055d17ef042ca9ffc3b304cc869c9c01d992e500449d8b6d7be72240801fe46d3f9c240138f3f7758abf211d091381593170a7aee8a4f11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}