{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182201936",
    "entityType": "Track",
    "nonce": "0x499739e709531cccca997b8024d88ef332a4353ec926567954e434a1049c7466",
    "signature": "0xd5559f34863fc1da05913eb7e7011b936c6027a09e9e38003b7d5d0b10bb01907eb9fbb01c1dac5bf263c0118792569d5519d3a4bf6370cf5f8f82e34e219b651b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}