{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "977867689",
    "entityType": "Track",
    "nonce": "0xa10c347ce3dec54812f7819f0e4f39a967eaad644e116e14086ef9d9b895a0e7",
    "signature": "0x695a781757089d02a6ebfe56d8609514b99ad1d1818542ea14f78b39e0d622975574b520a1dd95118539bb6c8ebbc2600825e937ae3de2421d62401a9e7a01ab1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}