{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "677682261",
    "entityType": "Track",
    "nonce": "0xde5d0efbc9cf9133b74de7bf62f6ef61b2d967e495e6265dbce8dd3051d505dd",
    "signature": "0x52cd689244b7f0b2e606dd163ea946dccace8b1fc33abe8ca70b1399ddbd36ef0aa9b2f80388a3f9bdbdf1ed59d75863663f12b266b98984e5694f80317fa0f21b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}