{
  "manageEntity": {
    "action": "Save",
    "entityId": "42612127",
    "entityType": "Track",
    "nonce": "0xbfbbafa114de5dbf9bb2dee30e43633756b27a5aee018674d15330d464794bbf",
    "signature": "0xb84ac2ee027de9cde6c0adf368337239da1dcf392e258e53d75b49d0c1ac8bbb2d5f156d999458ca32dded9d096cb92676a626b16d26ab9faffe4cc2ddeb47971c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}