{
"manageEntity": {
"action": "Save",
"entityId": "1623693722",
"entityType": "Track",
"nonce": "1792327059444367867",
"signature": "0x55b0217480a4a11fd045fff4f1e43f83fda44d316948e21b18a0906644472b8c39ba46d34f3e61c6787812f2bbbf80c348f0938c9e4e5b231521569f037358321c",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}