{
  "manageEntity": {
    "action": "Save",
    "entityId": "176942",
    "entityType": "Track",
    "nonce": "0x2794da0a492e411c99389466e619e7e71a1db379a755fde5a0afd9cab5783f90",
    "signature": "0xa5e6ac25753006ddcd232ad44adfa44a9d8a8b1cc4ae0098a73a311d52b459a541b1caa11aa1699bb7f9e611f88b642ef26060a9a770d3d23138af7677b23ede1b",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}