{
  "manageEntity": {
    "action": "Save",
    "entityId": "1098189688",
    "entityType": "Track",
    "nonce": "0x9435ea96987d232d4cb4ec2ac807c21cb3798c5af30b615ca1f0dd2cb68a785e",
    "signature": "0xfc1c77dfb53bdebc438a89e413abec31028525e7511dfcdb106f2fc7f99c4ae80ef1f34ef30506235bd472fb62ae0551205e637118ff41c95dee0041b2fe161d1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}