{
  "manageEntity": {
    "action": "Save",
    "entityId": "1953844069",
    "entityType": "Track",
    "nonce": "0xc8b6597956016b1cd85454aede1469f858b080a29bf294ad66596bb37fec3db2",
    "signature": "0x175ba44fec67e99dc8ca1cf8de0e76c239c883dda65d2f7351a0779ec0b219fa781cae9fe0a87b4eb42cf51aef07959e665b5f0189bf388946894ab48019f2c31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}