{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088469307",
    "entityType": "Track",
    "nonce": "0xd78b741e4953b2fcabb4bfd0da7d84954dedbaab219829894fb5ca039d8acb98",
    "signature": "0x9cab80974c11a6d86d9f5900582a97dc49e5c0580b03185e610559f6fc3e36d53410c1a54807574be051a1b11b53faac0ebcf2b10f7ba1d7f80ad8ff273c0fc71c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}