{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088485",
    "entityType": "Track",
    "nonce": "0x6da0c1506c6697011647e88fe2ed07584c66c1623e914a083022f4b238ca14cf",
    "signature": "0x6a75f5d1765008bc2ee738aaafb924da09fe363f289e92bdbea714c2ac033e1709accf912fcc1ca73126bee3b71b7db2601c036eaf1c3aa9eebab386e6a167721b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}