{
  "manageEntity": {
    "action": "Save",
    "entityId": "59665503",
    "entityType": "Track",
    "nonce": "0x244dff2afff932707e515f8e798495b26ebe15f7be7d9b003de0bf9008e15043",
    "signature": "0xc89fc1f205eec113c0e80c4cd2bbef57f3b142141b3a15bd5d978e62b068b9230657607aa90fa59c159e0fdce8a9279d8c561b1ad87a5da2895ab05cb2aef8361b",
    "signer": "0x06Ad5789cE045C5B0AeB97849051a7385CA95B4a",
    "userId": "270209897"
  }
}