{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "1030400",
    "entityType": "Track",
    "nonce": "0x46f70a495df67e3f35355015e085c8afa1697421655acd5e4718fe6aa3528ab7",
    "signature": "0xd3e9bf01bbc4f4e5a67c382b236829cf44f6457fd4615205fb661545101b60bd41ee3f5c8066f131a361883ca960ef248a20e91412b1e2c8999aae8b94a145b61b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}