{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1556058432",
    "entityType": "Track",
    "nonce": "0x5e50328410cce41d795df1f826fd9c920d7144378e1a5e0565bd6e1eb1fc1afc",
    "signature": "0x14f916fed309ae91bef374689bedd0987ce1f7a6f5ff2973938245cdcfeff34c6c1b6f5527138848b362330f707110f80e06dbc12344acb56bcc1268c2736c8a1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}