{
  "manageEntity": {
    "action": "Save",
    "entityId": "271779218",
    "entityType": "Track",
    "nonce": "0x33e8273c3bc5904902b2b69347207dbe5a332d4a88f97f3908d3123f8f38bcb8",
    "signature": "0xc59ddff9077cf2f96a41dc133d73bd561fc6cf3791dae34ece1021da70f7a642307dfbcdb491a06b7ca0a873fbced6f2d89262ac81e278d7e85778abd6a40f461b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}