{
  "manageEntity": {
    "action": "Save",
    "entityId": "1295075810",
    "entityType": "Track",
    "nonce": "0x417373da5800760e1dfb1a5b8b63254bf4fadf3d028aa4d1331a506ffb92e6a7",
    "signature": "0x17d3f840cc398567f7bb6ccca3fa16addff84e5b7e97c9922ff9494e055ab9f227998ffae02568a4da10de87e5207aecf193442bbd581783bd9d93ef244e04211b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}