{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "406107",
    "entityType": "Track",
    "nonce": "0x535bfaa2707ba7144e89912b911d5538098b8b0c83938c764b5f6b2b38e8474d",
    "signature": "0xe46438305cb5e04a5ba7d665022ca1ffa93b9cb37dfc0b21fc28e9861d069fc15769ca959e50283e0bc3f0671cc35c1b2dec5aba3b7162fe0b07fa6d82882ee61c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}