{
  "manageEntity": {
    "action": "Save",
    "entityId": "139081388",
    "entityType": "Track",
    "nonce": "0x4d38963820ce37c5f774b37da0908e683875221a6af21d7d9333c30a90656fe8",
    "signature": "0xcb88a1768771fbcf504dcec7ef037bc9de3114e27f198c3b97575fbd864f75714e55807089bff2bfea4799472d61d23468603787f4689ac3b9fb9c406bb378641b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}