{
  "manageEntity": {
    "action": "Save",
    "entityId": "2088540125",
    "entityType": "Track",
    "nonce": "0x91eccc230a7541fe8a5d64aef00fe21d77b0ed52e9a00c97ad0acde62e42aa60",
    "signature": "0xe755c4dd52b416428dfc87e20eb1bef9d616f4cab155c9eed7c9a1d0ede722757d70eec2a580b79d0e9bb611e9ba1e76c11e22c6b305ca8a4c8024a2db5532fe1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}