{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "941232312",
    "entityType": "Track",
    "nonce": "0x82f42230961b4272a14b9a4e8d518e50af50fc80289a51d7270746c1492635ae",
    "signature": "0xb4cfc522e6b336ad9da6e171879e470d7ecead3593e0ac3b964b489a561c25cc2732c83b6ca70c89d66d0a2820eb5169dd6d51cdc3aa4b0ecbf272667cc521301b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}