{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "464387191",
    "entityType": "Track",
    "nonce": "0xd2b4fae3e856e48d96063a23314c585e955de1dddc3d5c8c96221ad7938f49fd",
    "signature": "0x83b6180592c69bfc62ce43ce44b7fb61c140ad67a0049d2dea13286bccd92b1910018d766bbc7a5cd707114a5c925f6838a6a18b1f5a4c6a268db0173653c5b91c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}