{
  "manageEntity": {
    "action": "Save",
    "entityId": "580755003",
    "entityType": "Track",
    "nonce": "0xb1310d7397f0a7bc80377fa53896ef5bad9918a7b4865220cc802df90abf85b1",
    "signature": "0xd8c01499723e7b467515197c10d165beaf6656bc870e644f0008ad45a9261edb354ea039dc62ce630714040fe4cb13f969bf068f77105158e0dfb8988a1d96121b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}