{
  "manageEntity": {
    "action": "Save",
    "entityId": "11784",
    "entityType": "Track",
    "nonce": "0xd1e461fead97c27a2b97554a5a1e0e35531e106ff2b102fcf7e5383df750f6a6",
    "signature": "0x59fd0614ad1e58dbb676fcd6cf1eeb39416e1e416bca83a9606b00cd4e217d7c07821ff166f03ddf09599390d4145938aa86a336f04e65ffd73dde553cb232a41c",
    "signer": "0xa185Ff45de6FF68eAa1d7ceC338cba250810134c",
    "userId": "54166466"
  }
}