{
  "manageEntity": {
    "action": "Save",
    "entityId": "1725114431",
    "entityType": "Track",
    "nonce": "0x275bcd20c1f5361adc77e16c5161dacfb84d71185ed2ffd3b11c19289d081e12",
    "signature": "0x598bb199dfd4831e4e8ef7900cdc60ffb6bf5f558598bdf933a8058c7a5cd88e2e38d019011e5dfadf99235866f9055500a5b7b10882cf26c2b7534a97e3012b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}