{
  "manageEntity": {
    "action": "Save",
    "entityId": "995910942",
    "entityType": "Track",
    "nonce": "0xb271a48091a3222ab0fdafd63f7d3c7adef2ae04ecfe969f733d0b1eb97db131",
    "signature": "0x49d88dfcc18dbcf74cc5be33c5f0a4427f2e4cade0c6643a68150a9696910ec461d008aa7e7e35c942a178cf9842b1a2d01c3b98c7ab81b9d89d35337053d3c31c",
    "signer": "0x7889266088FFd7099Eb7fD849817133f8AaF02D6",
    "userId": "180843649"
  }
}