{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1804324636",
    "entityType": "Track",
    "nonce": "0xcf040badafff1dfce6f466f552172d97f4176b1a2de8c5d185d4d5c37152d4f5",
    "signature": "0xbf894123130611d4e4eadc022e9267943ce1d208b830350d592347bf39ddb1ac4e992ce80a18dc7718c75388adea444e647115dca6220d759ae548b68633e8711b",
    "signer": "0x2F7db4C1AE3922aD0f32CEdED1870278dd17b64b",
    "userId": "467213409"
  }
}