{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "207622",
    "entityType": "Track",
    "nonce": "0x8ab55bcf8c4335db3492c14667fee22e4de36e9681a3ee50b86d15ac9b4b8f00",
    "signature": "0x6a7098c82ceba308fd67f1747d7d8eb9c42bb71a8c3a1d8f34d1356d566f26d85479948aab0d3860e5d5eab4b903e5381aedd3069ea1a3a8de4b82e1d81dba171c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}