{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1725618640",
    "entityType": "Track",
    "nonce": "0xefd86146473316096c4777290b176c83814a50a67cd30bb5b6a5155b3ef96adf",
    "signature": "0x4eb87f8538f4c120434bd6ce916e71cffd3112d7c2e00df381a3da9269ae29496952ae51226f1d2d2258253a38c3bf91121ee3e37aebfef0a5453764c492c9691c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}