{
  "manageEntity": {
    "action": "Save",
    "entityId": "2135670082",
    "entityType": "Track",
    "nonce": "0x0214a708c81b1f0cedc8bba05d61f0df0a4becf5e2a7d68f9666b9e2583f9027",
    "signature": "0x356e34166f7e87089df294f54112fbd65fba3c999cb0326fe6c329d4f19980583ffc1264c7afe3c7c5cd88edcb6288295b6d74becc11c7e71b6f71108b9407651b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}