{
"manageEntity": {
"action": "Save",
"entityId": "1748111364",
"entityType": "Track",
"nonce": "0x0a8bdadb6c3c380ba7daf6e1d84a23a208ac7f3817e347a0729a578d1da7f601",
"signature": "0x6f8afb6a7e35255facd3983d55166c853bbebc84f9a7ea2b00c493d6f35e01726137102d219800cd69feb821e6c947b0190fd2f66d26efce289ad1175d8d09ec1c",
"signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
"userId": "632918751"
}
}