{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027696",
    "entityType": "Track",
    "nonce": "0x786afc90618c66e1a6c0fe490c35ebe768e8b4352ded0a7638acb0151f5dbc22",
    "signature": "0xecf02a0e26bcc1f285b51fde82c034573b770a4920ca9f5c931b046790037f345696efffb7dae3255cefea52e87ef5d2802b2c23395edde69a4939a96f07597e1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}