{
"manageEntity": {
"action": "Unrepost",
"entityId": "338249",
"entityType": "Track",
"nonce": "0xb9865dfbb86d3019e1386bdf7baba04f568e12ae52c934a9c4463dbc18335e85",
"signature": "0xb98c58a90dec92c7b7767682ce83ac3d2de0b6e751882a96185d8cbe0f65bed458ed3c1fcb41028e753f6679aa8cbea10877f9bb1489d78291cee41135b4174e1c",
"signer": "0x518d991AC05EA4b6feC18b046e6F17E451dE7539",
"userId": "824155415"
}
}