{
"manageEntity": {
"action": "Save",
"entityId": "1435701783",
"entityType": "Track",
"nonce": "0x8e2ce88de630510d5883f6c5e82f825fe303558edf3f7ea6a26421f81a11455a",
"signature": "0x621c3c8a5e3edbb495b081b4052e8dff5710d368a60db863029844af99bc7a8e123018e2e3879ac78885d056a1ff38317c653b976bc4ac916c0dde5861b874111b",
"signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
"userId": "333763354"
}
}