{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106866836",
    "entityType": "Track",
    "nonce": "0x55dda1b77e660d546d08c5908204d54d949863e58af6e942daf65ad1cbe0629e",
    "signature": "0xdad88d0e1f0338ea862d761ef11100501e6d4c658e2266bf93e7aa5b01742612535403ca2cc55092d67c1f2870f35ec304b83a380ed9850705633382a14e683c1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}