{
  "manageEntity": {
    "action": "Save",
    "entityId": "68646764",
    "entityType": "Track",
    "nonce": "0xead2946aafd6e0825d67122ba76ab528ba92568e0b082e1b41a883b9aef3d386",
    "signature": "0x7efc58060425fc196f693b6a470e7a403a4fa4c07b37de6c7e294d5a7c2657ac405389d5528f9da961158c7faf972c7079d656ebdfdab5be775a9682ae23bfa91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}