{
  "manageEntity": {
    "action": "Save",
    "entityId": "1053374298",
    "entityType": "Track",
    "nonce": "0x3258d4953ccd3eabfb90a637f64e0ffad242c40f9202b28d04589ab5896211e1",
    "signature": "0xd361ace55071941028865c891677c0a34b0a817951dfcc8087c5c6cb4dc1b95e50e33cd2850562be2ceb23535770d18d6da9e6bfeedefca7a84fec1ebd1d818d1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}