{
  "manageEntity": {
    "action": "Save",
    "entityId": "279810758",
    "entityType": "Track",
    "nonce": "0x7a98b43a098a0b8a2410b695616856f8b24f5d518b91886f5c821550af35367a",
    "signature": "0x11abdd1cf5eb4e30776b35f3135356286806d01166ed44ac1b3fe0d42cc8e62c3756381d6dac492909651b39c6c1bbc4b7af25ededac99b310d2660d5b756e531b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}