{
  "manageEntity": {
    "action": "Save",
    "entityId": "1059091",
    "entityType": "Track",
    "nonce": "0x68e46e02155f869cd3addafb3b1e3cf61f73fbc5ab9e23dea123e4862f7622fb",
    "signature": "0xb110389ad1856f3b06f4b4f29246996f3b75c7887745d77cdc35d12cc6f1b85465530500feae420034940a6e96d850825ea33eb83bf7b1b5e8075b3a02f0f8c21b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}