{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "222456",
    "entityType": "Track",
    "nonce": "0x8a3b94f69bb4aa8e10e63b77f606e1eecb2cfd6d08a192d7bc6e5e857a74c37b",
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    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}