{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "651858",
    "entityType": "Track",
    "nonce": "0x12e857c84ede29b04dc19a1200caf943144c3e1dfbba63a3b7a84b8fe138e710",
    "signature": "0xffd1604824adddb54be476c6837502fa3d527430abecde203a5c95222ebf20bb39f8f6f2f6369571d22897b77479b75b9b4ee924c57382d1dc2bce58694ec0ba1b",
    "signer": "0x0CD9dcF9fcCa28bC63B06fF92A4214f7Ed04b0aa",
    "userId": "733078358"
  }
}