{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105214",
    "entityType": "Track",
    "nonce": "0x0280aeada7329bda388f41665a453545dc3425f1994216d13cd0623c1b42c313",
    "signature": "0xbf5d927caa5b62dfc99382aaa50eaa3bb198f4608a93d06c3973b466f9ead321014ca939c4bd5822d9835a5cd3de4b168b8f3ccf5eb6877109a15f2835f465a51c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}