{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "541980315",
    "entityType": "Track",
    "nonce": "0x30b3f170844cb3dbdf48841883547b00a4d8dee4191047e40bcd533885cc6d3b",
    "signature": "0x73c68c2dd521cb4ebd66850df486b4efdbf038428abcfa3d3ae210b06960e9ef76afdf2729dfd927549c7d032bcb039ae00a31cf2d3999ba959ecd59ce8fe7fc1b",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}