{
"manageEntity": {
"action": "Save",
"entityId": "395489445",
"entityType": "Track",
"nonce": "0x794796e7355a51f971175d84cde4f2a733ebd9cd19a1767d5eb634cc25cf18fa",
"signature": "0xf417038ce6a8e3474d23d43468abb9a6444383aa6330b1803a7f8c362a6cde7036ec50ac60049942b9b5a74117d49c668f11dfc565b9172a07ffcb0f8b09f0a31c",
"signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
"userId": "29088079"
}
}