{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1304965888",
    "entityType": "Track",
    "nonce": "0x2143469eb9e234b0482fefe5716f3f418f51096aae587d39977a455a1b0c3a60",
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    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
    "userId": "47828528"
  }
}