{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116793",
    "entityType": "Track",
    "nonce": "0xd6d328e309c13cfb995dea07ee0105e40d8698cf8f762299588a1c99372c0dc5",
    "signature": "0xfc1ca34a7086d92b8a6e5dc075ce0d9be3d8882e100e6dd564ef208d9912feb445438a79c71952d006df63bbcd276a82325f24cbab4c9e1781fb76be862fe01a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}