{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "107238914",
    "entityType": "Track",
    "nonce": "0x3cf9a013977f067f1d42a544621e69b99362f03366b36e6afa66b2052afbc196",
    "signature": "0xbdf2e23287fed2eeae7a23be5cfaf1f05a7dd202d6421cbdbf3cd34e31e55f4c6f3d909d0b61f317b562b73b16e1a77d8a453c6577a99a3c2e564781219fc53e1b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}