{
  "manageEntity": {
    "action": "Save",
    "entityId": "1730475034",
    "entityType": "Track",
    "nonce": "0x0e90ae110e0401591f1a22c711f3d66c8aa0b69dfd54e77f826a33ca5bf57ee7",
    "signature": "0x815eb5b16666b119a90b07e7c96df4997026c71cd246cd59e4ee02356233606b1d2c246906f7c1dd8bd5209d91f6b1315b698287955c64a95c9dbdc80e529df51b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}