{
  "manageEntity": {
    "action": "Save",
    "entityId": "1470257621",
    "entityType": "Track",
    "nonce": "0x460e301d6851269d3325a2fbbae1d9b800312d9e88c17044dd33bdbd6dd46e26",
    "signature": "0xb18452200995db278c65e66ef6ec6fb7a3820082ca4c62a252b3f2806282457568fd28e4336a51ea9d1572a5696a57ef0f33f05ed7477a8a5e924dc7d8a2fc351c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}