{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1391143668",
    "entityType": "Track",
    "nonce": "0xbc93fc76bcdf84188a09cd033809c44a0a470ef1da00cde5c54b334cc1516214",
    "signature": "0xc8d86a4fdfee9dbf2ec43dc66f596cc7bb39f1141525625be897cdfb0d2fc9401704f6e48982cd71a7d54f8fe79bf1b597f72e422b3e9c1fbcf96f89a48ab8481b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}