{
  "manageEntity": {
    "action": "Save",
    "entityId": "592176",
    "entityType": "Track",
    "nonce": "0x8a2ca3277c363d5d9d7b376d2ff8d3116ed04363ace1882bc5d440ab85a0b081",
    "signature": "0x2e6a5b473c7360637023fd205783175e021442aa23819850900ea86f2c72b55b5bf369b5a91b7e44290236615a6802363e7b83d45cb1416b7ba2d2e07c0cc0b11b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}