{
  "manageEntity": {
    "action": "Save",
    "entityId": "379096051",
    "entityType": "Track",
    "nonce": "0x3c14c732b13e7fd9e43b38dacb1d6bea834004a53647281377342d15c9d388b9",
    "signature": "0x61b536aa68c881c18b947f942a201da438f113cb241784a697d47dfa70cd81cd35422bb52623de64a0aa3ed79867a662876be0e85306c5359aa46e70377d1d691b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}