{
  "manageEntity": {
    "action": "Save",
    "entityId": "1705460882",
    "entityType": "Track",
    "nonce": "0x5d5921a2ba917b9c7b1698f642bd84642b3d816d5788d6d4569697d0acf170d2",
    "signature": "0xc4fb851c56c4396ec4aa30e61e328111f067a0a4cf49384ed95c7918327ea93d3eba65692a9b6ae8b9ba16487c70e9cf1c8c135612e7db6448f689a21e5988d31c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}