{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "803276679",
    "entityType": "Track",
    "nonce": "0x96f8e8b101ecd82275fd6093b62d0ab88f6fcc2693e67f1e5a34dad5c4b0d561",
    "signature": "0xf6305a4d42653c63f83db7dce6f1424902ac264bd7a8b7ba4adab59beabb1bee6439c5bbc47c15307c01098ad589f7c1388f9a4190d7e8191496db2080331b6d1c",
    "signer": "0x476cb68E9Ba3f7c06Beb93eEc0760FA37E725E8F",
    "userId": "323047075"
  }
}