{
  "manageEntity": {
    "action": "Save",
    "entityId": "1670843946",
    "entityType": "Track",
    "nonce": "0x1b01b404b7cec760da28b520e1fc15f1e98c04d8b8d048603681ec051baa89d3",
    "signature": "0x13bdee38872f0cd33636bd1bc5d434b131f189fdb11d66f94df023674a0cdffa3e72761835ec974af87646d17239ba236339f27e1f3bf95879b970984fc319691c",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}