{
  "manageEntity": {
    "action": "Save",
    "entityId": "114804",
    "entityType": "Track",
    "nonce": "0xc9b973d9269432064b95c0deab692cafdb539937494d9e9d188b444c283b6c94",
    "signature": "0xf3c76f477bb38b7df01954ea5b5007705156fdc9b02fa51cd335b0db64954b051dac00fb53c8294d7335531be72d51251f5ff7b0eabf1bb7ad2b02b67e3f2b491b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}