{
  "manageEntity": {
    "action": "Save",
    "entityId": "70729481",
    "entityType": "Track",
    "nonce": "0x7480c2452eb2e8e026aaa98dc054eaf39fec8f68fa1378df3a928052523cc695",
    "signature": "0x9a6ba22c067a6d7ee4b08181cb116bf6c2923c3a66aa833e8ed6f574afeeecf003159fcd463a1d328281129af18f64731a6e0825fbe5c1d8185280584b4fc14c1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}