{
  "manageEntity": {
    "action": "Save",
    "entityId": "1079214",
    "entityType": "Track",
    "nonce": "0xc76bee2da55423a45f9b6214f20f1d6db0e182eb1cfef4ba77d0d477cff7ce18",
    "signature": "0x0565887af9b5c777e181b5f954755cb644c0912e1025d87a61b8da0f0b8136f532301f299be1b521a552395e2178639c5101eb035ae8276b938e089e7aa00ca11c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}