{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1605946302",
    "entityType": "Track",
    "nonce": "0xdd73487b6372a402470a44d56ff38f26c3c7d4e7e77491b1794490a0bccd201e",
    "signature": "0x1965d2bd8f18525665a20024d7c73aef1fca333be946f79859603996e47c1d341c92c024845abb351b2bf454f2882aa5c45d580f6471bf40065b422fe16b19591b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}